Cloning a workstation

[Sarunas Burdulis]

Hello,
I need to clone a workstation (which has some custom configuration and 
scripts added to otherwise basic Sarge/KDE) into another set of 
absolutely identical hardware (Intel Pentium 4, IDE HD). Just one clone, 
not a massive install. What tools would you use? Easiest/quickest? 
Machines are on an Ethernet, have CD/DVD and floppy drives.

Thanks for any suggestion!
Sarunas
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Re: Cloning a workstation

[Sarunas Burdulis]

Thank you for all the input. Certainly more than one way to do it, as 
usual... For the single case a simple scp/rsync + grub install seems 
adequate. However partimage looks like something worth getting familiar 
with --- so I'll try that.

Sarunas
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Re: Cloning a workstation

[Sarunas Burdulis]

Roberto Sanchez wrote:
Sarunas Burdulis wrote:
Thank you for all the input. Certainly more than one way to do it, as 
usual... For the single case a simple scp/rsync + grub install seems 
adequate. However partimage looks like something worth getting 
familiar with --- so I'll try that.

Sarunas

For your needs, systemimager may be a better choice.  I have used it
in a lab environment to install similar machines.  You would need an
image server (just a machine with enough space to store your images).
systemimager has some really nice features.
Roberto,
Thanks for another suggestion. Yes, I looked at the systemimager too.
Looks like a tempting option, if the project I'm working on really
develops into something (numerous public Linux workstations in a college).
Sarunas

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Convert Real video to MPEG4 or QTime

[Sarunas Burdulis]

Hello,
I need to do a one time massive conversion of video materials currently 
in Real's .rm files to MPEG4 and/or QTime (switching from RealServer to 
the open source Darwin Streaming Server).

Can anybody recommend a free converter for Linux (or Mac OS X for that 
matter)?

Thank you,
Sarunas
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Re: How Do I Get the Java Plugin To Work with Firefox and Mozilla?

[Sarunas Burdulis]

Scarletdown wrote:
I've installed Java and made a symlink in 
/usr/lib/mozilla-firefox/plugins to where javaplugin.so is located,
but whenever I try to access a dite that uses Java (such as the
EZ-Board chat feature), I get "This page contains information of a
type (application/x-java-vm) that can only be viewed with the
appropriate plugin.

So even though I have the plugin installed, it doesn't seem to work
with Mozilla or Firefox.  However, it works fine with Konqueror.
What else do I need to do to get Moz to work with Java?
Is Java plugin listed if you navigate to 'about:plugins'?
This is what I have in /usr/lib/mozilla-firefox and it works (note the
'/ns610-gcc32' part):
libjavaplugin_oji.so ->
/usr/local/j2re1.4.2_05/plugin/i386/ns610-gcc32/libjavaplugin_oji.so
Sarunas
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Intel Xeon, SMP kernel

[Sarunas Burdulis]

Hello,

1. When compilig a kernel (2.4.25) what is the proper CPU architecture
setting for Intel Xeon CPU?
2. Are there tests/demos to check the SMP system and to see the two CPUs
(in my case) actually at work?
Thanks,
Sarunas
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Installed packages: what location from?

[Sarunas Burdulis]

Hello,

Is there a way to find out from which ftp/http source the package was 
installed (assuming it was installed via `apt-get ...`)? Or to get the 
list of packages installed from the given source?

Thanks,
Sarunas
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Re: GPU PCIe link speed

[Sarunas Burdulis]

On 1/21/22 17:07, Grzesiek wrote:

Hi there,

I noticed that all my GPU operate at PCIe 1.1=2.5GHz instead of PCIe 
2.0/3.0. Is there any way to force higher speed?


Hardware details below

---===### First system ###===---

CPU: i7-3770, Linux version 5.15.0-2-amd64

# dmesg  | grep bandwidth
[    0.224924] pci :01:00.0: 16.000 Gb/s available PCIe bandwidth, 
limited by 2.5 GT/s PCIe x8 link at :00:01.0 (capable of 126.016 
Gb/s with 8.0 GT/s PCIe x16 link)


# lspci

> ...
01:00.0 VGA compatible controller: NVIDIA Corporation GK110 [GeForce GTX 
780] (rev a1)


Link speed might be set dynamically depending on load. You may do 
something like:


watch -n1 'lspci -vv -s 01:00.0 | grep Lnk'

and then find some task to load the GPU.

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Re: Reading pdf files

[Sarunas Burdulis]

...
>> in general I do not have a problem reading a pdf file with either xpdf
>> or documentviewer.
>>
>> But once in a while I get a pdf file that they cannot read and then I
>> have to go to Windows to open it.
>>
>> What is so spectacular about these files that they cannot be read by the
>> above mentioned programs? Is there another program that would read such
>> a file?

It's hard to tell, without having those files. PDF has many variants and
options. I too have encountered some, though very few, which only open
with Adobe Reader. As I recall, they were just PDF "shells" with
instructions to load actual contents remotely...

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Re: Reading pdf files

[Sarunas Burdulis]

On 6/15/19 3:11 PM, Fred wrote:
> On 06/15/2019 08:40 AM, k. jantzen wrote:
>> Hello,
>>
>> thanks a lot for this interesting discussion.
>>
>> As stated before I used documentviewer and xpdf.
>>
>> As a consequence of this discussion I tried evince and mupdf.
>> They did not solve the problem.
>> I did not try atril and okular because for those I would have to
>> install so much extra stuff that I probably will use only in this
>> context.
>> Thus I do not know whether they would solve the problem.
>>
>> My conclusion: This seems to be the result of generating the pdf file
>> under Windows. To read the file I have to use the latest version of
>> the Acrobat Reader. Thus I will continue to use Windows in the few
>> cases I get such a document.
>>
>> Thanks a lot.
>>
>> K.D.J.
>>
>>
> Hello,
> 
> Possibly you could run Adobe Reader under wine and not actually have to
> run Windows.

...or install Adobe Reader 9.5.5, which is still available on Adobe FTP
server. Very rarely needed here, but it works.

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Re: Replacing nvidia card, with Amd - can no longer boot.

[Sarunas Burdulis]

On 6/30/19 2:09 PM, Esteban L wrote:
> ...
> What I don't know is how to solve this issue had the nvidia card failed
> :-( i couldn't do much of anything.

Try booting from some live Linux media (CD, USB), with AMD card installed.

chroot to your system and do the same uninstall "trick".

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Re: tbird broken

[Sarunas Burdulis]

On 11/18/22 12:09, gene heskett wrote:
... But this is imap email, and no errors are 
reported, it simply does not decode and display base64'd content that 
appears to be properly MIMETYPED, boundary lines present and matched.


Thunderbird has Error console. Open it with Ctrl+Shift+J or
Tools > Dev. Tools > Error Console. There might be some error info there.

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Re: lpr hangs on emojis

[Sarunas Burdulis]

On 2/16/23 22:46, Greg Marks wrote:

When trying to print a file that contains emojis with the lpr
command, not only do the emojis not print, nothing following the first
non-printing emoji prints.  (This makes it a hassle to print certain
e-mails piped to lpr using mutt.)  As a small example, after entering
the command:

echo -e "Hello\n\0360\0237\0230\0212\nGoodbye" > /tmp/test.txt && cat /tmp/test.txt 
&& lpr /tmp/test.txt

only the first of the three lines prints.

One way to at least get all of the text to print is to use pango to
convert from UTF-8 to PostScript:

cat /tmp/test.txt | paps --paper=letter > /tmp/test.ps && lpr /tmp/test.ps

Apart from such commands being a bit unwieldy when trying to print
e-mails, it's typically only apparent that an emoji is interfering with
lpr when most of the file doesn't print.  Also, if the emoji is actually
intended to communicate something, it would be nice if it appeared on
the printed page.

It seems that the enscript command works a bit better than lpr here;
the entire file prints along with the octal codes for the included
non-printing characters.  So there is at least an indication that there
is some other character in the text that one might be inclined to go
back to the computer screen to view.

Does anyone have a good way of printing text that contains emojis?


The issue might be with CUPS texttopdf filter:
https://github.com/OpenPrinting/cups-filters/issues/254

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Re: Replacement for media-tomb?

[Sarunas Burdulis]

On 1/18/19 1:21 PM, "John  i have been running media-tomb for so years and have been happy with
> it.  My usage is fairly simple -- audio flac files server to mainly
> digital streaming radios.   I am in the process of upgrading to
> stretch and have just discovered media tomb is no more.  Not wanting to
> start a religious squabble but is there a simple replacement?  I saw
> references to gebera but was unsure how to get it without building
> myself (which I could probably do if necessary) and other names I saw
> seemed to concentrate on video which does not figure highly in my
> lifestyle.

I just did switch to Gerbera, which is a continuation of Mediatomb. It
does all, what Mediatomb did and more (e.g. streams DSD audio files). I
use it for photo, audio and video DLNA/UPnP streaming. I don't use any
transcoding.

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Re: Laptop still extremely slow after replacing msata ssd and putting old one back

[Sarunas Burdulis]

On 3/4/19 7:04 AM, hdv@gmail wrote:
> Hi all,
> 
> The mSATA SSD in my Thinkpad W530 was getting full,. So I tried to replace it
> with a new larger one (Samsung EVO 860).  I knew about the mSATA II vs III 
> issue
> and the BIOS AHCI setting. What I didn't expect was the laptop to slow down 
> to a
> crawl. To illustrate: even opening de start menu is so slow that you have to
> wait for the panel to show for about 10 seconds. Like this the machine is
> completely unusable. I expected not to be able to run the new SSD at full 
> speed
> (max 3 GB/s on the port in this machine), but this is crazy.
> 
> It gets even crazier. Placing the old SSD back in the slot resulted in the 
> same
> slow speeds as with the new SSD in. Not the old speeds. Before this experiment
> the laptop was just fine. It was quick enough, the storage was just getting
> filled up.
> 
> Can anyone give me some pointers on how to diagnose or maybe even fix this?
> ...

Boot from live media; reset BIOS to defaults; check for W530 BIOS
update; SSD firmware update; ...

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Re: usb Confusion

[Sarunas Burdulis]

On 2/11/20 8:31 AM, Martin McCormick wrote:
>   After recently ordering and receiving a new 1 TB external
> SSD drive, I realized I had no way to connect it.  It has a small
> rectangular slot about 8 MM or a quarter of an inch long.  A Mac
> lightning connector is almost exactly the same size but
> fortunately doesn't plug in but that's the size of whatever fits.
> Crucial says it is usb-A .
> 
>   What is the correct nomenclature for the most common usb
> connector that has been around for 25 or 30 years and fits the
> vast majority of devices using usb?

Here is a nice table, in which you perhaps can identify the connector on
your drive:
https://en.wikipedia.org/wiki/USB#Receptacle_(socket)_identification

There is no such thing as usb-A. They probably mean USB Type-A. Also
note the table says Connectors where it should say Standards...

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Re: Advice on upgrading to SSD

[Sarunas Burdulis]

On 3/2/20 2:19 PM, David Christensen wrote:
> On 2020-03-02 03:28, Tony van der Hoff wrote:
>> Hi,
>> I'm currently running Buster on a 5 year old GigaByte motherboard with
>> a 10-year old Raid-1 array on 2 500GB disks. Although it is running
>> fine, I'm becoming a bit concerned about the longevity of this
>> storage, so I'm planning to upgrade it to a 500GB or maybe 1TB SSD
>> from Crucial.
>>
>> My plan would be to install the SSD in the cage, and dd the contents
>> of the array onto the SSD. I would then change the BIOS to boot from
>> the SSD, making the RAID array redundant.
>>
>> Can someone please tell me whether this plan is feasible, and what
>> pitfalls I might encounter?
>>
>> Thanks, Tony
> 
> I would suggest doing a fresh install onto a single, fast SSD, keeping
> the system image and your home directory small, and leaving the bulk of
> your data the 500 GB mirror.  Backup, archive, and image religiously
> (especially before you start on this adventure).

+1. Nothing like a fresh install.

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Re: upgrading ubuntu to debian

[Sarunas Burdulis]

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Britton Kerin wrote:
> I just bought a computer that came with ubuntu and would like to switch
> it to pure debian.  Is there a standard way to do this that someone 
> could point me to?
There is no standard way. Fresh reinstall is perhaps the closest to "standard".

If you have time to spare, change your sources.list to point to Debian 
repositories, run apt-get and see what mess you end up in... I did a
reverse---Debian to Ubuntu---upgrade once and it took much longer to clean up 
things, than a fresh install and config.

If your new computer works fine with Ubuntu, I would save the output of lspci, 
lsmod and a .tgz of /etc, just in case you'll need a hint while
trying to make some component to work in Debian.

Sarunas
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Re: upgrading ubuntu to debian

[Sarunas Burdulis]

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Ron Johnson wrote:
> On 08/30/07 14:37, Hal Vaughan wrote:
> [snip]
> 
>> While it's just a small, niggling detail and may be just semantics, 
>> there is a true root account on Ubuntu that can be used the same as a 
>> root account on any Debian release.  The only difference is it doesn't 
>> have a password on setup.
> 
> You've GOT to be kidding...  Right?  Please?
"doesn't have a password" does not mean "empty password" in this case. 
/etc/shadow has "!" for root's password field, which, together with pam
config, prevents logging into account.

Sarunas
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Re: sarge->etch upgrade hits dependency hell

[Sarunas Burdulis]

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[EMAIL PROTECTED] wrote:
> After failing to reconstitute my etch system (details abundantly 
> available on this mailing list a few months ago), I wiped its partition 
> and tried to install etch form scratch using installer release candidate 
> one, only to find that lilo crashed when it was trying to make the 
> system bootable (installation report has been submitted).
> 
> So my next attempt was to copy the still-running sarge system I have on 
> another partition into my etch partition, and to try to upgrade the copy 
> to etch by changing /etc/apt/sources to read 'etch' where the old one 
> reads 'sarge', starting aptitude, and upgrading.
> 
> My first attempt was to try to upgrade aptitude first.  No luck.  
> Trying to upgrading aptitude immediately led to hundreds of packages 
> that would be deleted.  My guess is they were caught in the libc 
> transition.
> 
> My second attampt was to try 'U' so as to do a general upgrade.  Again, 
> huge numbers of deleted packages, and a huge number of packages to be 
> installed, too.  Went ahead with it anyway, after rescuing aptitude 
> itself -- it had decided it was appropriate to delete aptitude without 
> installing it again.  But just typing '+' on aptitude was enough to 
> restore it without problem, so I don't know why it decided it was to be 
> removed in the first place.
> 
> After about three to four hours of downloading, it started the upgrades.  
> Several problems immediately.  It couldn't upgrade fontconfig or pysol, 
> and refused to try further.  pysol needed python2.4, don't know why it 
> decided to do that first.  fontconfig is now unusable, which causes 
> troubles elsewhere.
> 
> After various attempts to solve the problems, I am left with a huge 
> number of packages to be deleted/upgraded/installed, and X that won't 
> work, and a list of 18 packages that have problems.
> 
> Should I try again tomorrow in the hope that package dependencies will 
> sort themselves out?  Or should I just give up and try another way of 
> installing tomorrow?  Can't think of one now, but one will probably come 
> to me it I think hard enough.
> 
> -- hendrik
> 
Sound like what I have seen "as usual" while doing dist upgrades (Debian
and Ubuntu). Several apt-get {update|upgrade|dist-upgrade|-f install}
cycles often are needed. Some packages almost always get "stuck", i.e.
cannot be upgraded or prevent other packages to be upgraded. For those I
do apt-get remove and then install.

Sarunas
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Re: My sarge box has an IRC bot

[Sarunas Burdulis]

Fran wrote:
> I've been told by my ISP that my sarge webserver (only port 80 open, all
>  software up to date) is spewing traffic they're calling IRC_nick, which
> is apparantly some sort of IRC bot.
> 
> I'm unable to locate the file/files that are infected.  Additionally, I
> can't see the process/processes for the bot when it's running.
> 
> chkproc -v does reveal some hidden procs, but before I can kill them,
> they seem to go away.
> 
> chkrootkit/rkhunter don't seem to see anything either.
> 
> Any other suggestions?
> 
Use tcpdump and/or ethereal to check traffic.

Check apache logs. You may see some STDOUT from wget there, if they
broke in using a vulnerability in some web app.

Watch lsof or netstat for ESTABLISHED connections. Use 1s watch frequency.

Use top/htop with high refresh frequency. Note unusual short lived
processes. Try locating their binaries or scripts. /tmp most likely.

HTH,
Šaru-nas




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Re: SPAM!!!

[Sarunas Burdulis]

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Chuck Payne wrote:
> Guys,
> 
> What is going on? Last three days, I got a increase of spam and it all
> coming from this list. Are you guys working to fix it?
> 
> Payne
> 
> 
No spam is getting to me via this route (below). How do you get d-u?

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Re: Tool for document management

[Sarunas Burdulis]

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David Brodbeck wrote:
> 
> On Sep 25, 2007, at 7:17 PM, John Hasler wrote:
> 
>> David Brodbeck writes:
>>> TeX is awesome for writing books and scientific papers.  If you're
>>> writing a letter to Grandma, though, OpenOffice is better suited.
>>
>> Now _that_ sounds like driving a semi truck to the supermarket to pick
>> up a
>> bottle of milk.
> 
> Depends on your perspective, I guess.  It just feels like by the time I
> get all the preliminary verbiage TeX needs typed out, I could have
> written the whole letter in OO.  Also, looking at my copy of 'The Not So
> Short Introduction To LaTeX,' it's not clear to me what document class
> I'd use.  They're all going to be a bit clumsy and inappropriate.  It's
> not an "article", it's not a "report", and it's certainly not a "book"...
> 
And given what's going on in TeX (let alone LaTeX) behind the scenes, OO, when 
used to typeset a single letter, might prove to be a somewhat
smaller truck :)

Sarunas
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Re: How to wifi with ipw3945 on Dell Vostro ???

[Sarunas Burdulis]

Joost Kraaijeveld wrote:

Hi,

I am running Debian Lenny on a Dell Vostro laptop which has a ipw3945
wifi card.

The card is recognised by the software and it even works somehow  (I can
see all the wifi networks in my building using wifi-radar). But whatever
I do I cannot get a  (DHCP) ip address from my Zyxel AP which is using a
WEP key (and it did when I still used Windows Vist so I know for a fact
that it is possible). 


Does anyone have any idea of how to get this card talking to my WEP AP?

TIA

Some maybe useful info:

* 
/etc/network/interfaceses:


auto lo
iface lo inet loopback

Did you install network-manager and network-manager-(gnome|kde)? If so, 
the above two lines is all that you should have in /etc/network/interfaces


nm-applet GUI will let enter all the options needed, including WEP key.

Sarunas Burdulis


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Re: 2.3.0 ooffice

[Sarunas Burdulis]

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Pavel SRB wrote:
> hi all
> 
> as i am still fighting with oofice, i was thinking about getting the
> newest version. Now I have 2.4.0 downloaded via apt-get. I was searching
> for a while internet, about new sources to my /etc/apt/sources.list to
> have 2.3.0 available. Here i found that this version is available as
> experimental.
> http://packages.debian.org/experimental/editors/openoffice.org
> 
> so i add to my list
> 
> deb http://ftp.debian.org/debian/ experimental main contrib non-free
> 
> but after
> apt-get update
> i still get answer i already have newest.
> 
> did i add this experimental line correctly?
> 

The line is correct. You can check on what Debian "thinks" about ooffice 
versions (given your sources.list) by:

apt-cache policy openoffice.org

Then you might be able to install the needed version by, for example:

apt-get install openoffice.org=

or

apt-get install -t  openoffice.org

OOo though has a lot of dependencies, so there might be quite a few 
packages/libraries to reinstall. And some libraries might be essential to
other parts of your system...

Sarunas
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Re: Problems with installing Debian Linux on a SATA hard disc

[Sarunas Burdulis]

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Triskal wrote:
> Hi there!
> 
> I did a search for my problem, but couldn't find the answer. If I
> overlooked it, I apologize. Also, I'm quite new to Linux (I've used it
> for LaTeX, but not much else, and I'm an absolute novice at installing
> Linux.)
> 
> About my system:
> 
> 1. I have a Dell Dimension 5150 with a 320 GB SATA hard disc; on this
> disk, there is Windows XP (three partitions on the hard disc).
> 
> 2. I bought a new internal hard disc (Samsung SATA2 160 GB
> (HD160/1HJ)) to install Debian Linux on it (Sarge 3.1r0a, which came
> on two DVDs which were part of one of the two main books in German on
> Debian Linux).
> 
> The problem:
> 
> The installation program didn't recognize either of my two hard discs
> (neither the one with Windows on it nor the new one): "no partitions
> found".
> 
> Now, I'm currently downloading DVD iso images with Etch on it in the
> hope that Etch can handle SATA hard discs (since Sarge could not). Is
> there any point in doing this (i.e., does Etch still have the same
> problems with SATA discs)? Or what should I do?

Instead of downloading DVD, you can download a much smaller "netinst" CD image. 
Even if you won't use it for net-install, it will give you an
idea of what hardware is recognized by Etch.

Sarunas

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Re: updating to last sarge

[Sarunas Burdulis]

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roberto wrote:
> hello
> in order to perform a distro upgrade to debian etch i have to do the
> update to the last released sarge (as stated in debian official guide
> to this kind of upgrade)
Correct.

> so i have to change the occurrences of "stable" in my /etc/apt/sources.list
> to "sarge"
Yes.

> # My sources.list file.
> 
> # Official Debian mirror
> deb http://ftp.it.debian.org/debian/ stable main non-free contrib
> deb-src http://ftp.it.debian.org/debian/stable main non-free contrib
> deb-src http://ftp.it.debian.org/debian/stable main contrib non-free
This second deb-src line seems to be redundand, but this isn't essential.

> # Security updates
> deb http://security.debian.org/ stable/updates main contrib non-free
> # end
> 
> then
> - perform an update
True.

- - Then modify your sources.list back to 'stable' or 'etch'.
> - then starting the upgrade procedure
Right.

Šarūnas

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Re: Serious local root exploit in linux kernel

[Sarunas Burdulis]

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GaRaGeD Style wrote:
> Any Idea on why it doesn't work on a 2.6.18-openvz-13-1etch5-686 kernel ?
> 
> I tested 2 boxes and 2 variants of exploits, none worked.
> 
> I will take care of the "normal" ones :)
> 
> Max

Doesn't work on Xen-modified kernels either.

Sarunas
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Re: sata and esata: trouble

[Sarunas Burdulis]

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Jerome BENOIT wrote:
> Hello List,
> 
> thanks for the replies
> 
> Douglas A. Tutty wrote:
>> On Fri, Feb 15, 2008 at 02:49:44AM +0800, Jerome BENOIT wrote:
>>> I have an external SATA hard drive plugged via esata to my Debian box,
>>> whereas my internal hard drive is also a SATA hard drive. when my box
>>> is rebooted, sometimes the external SATA hard drive is chosen
>>> as internal hard drive, so I have to reboot again.
>>>
>>> I have tried to fix this issue with udev, but without success.
>>> I guess that I missed something: how can we fix the trouble ?
>>
>> Here we go again.  This is a recurring problem with the sd* drives
>> getting assigned in different orders with each boot.
> 
> I known that is a recurring problem: unfortunately I had not grab
> rigth answer from Google, hance my email to the list.
> 
It's not entirely clear why do you have a problem, i.e. why do you have
to reboot.

If it is what I suspect, perhaps you could try assigning a label to your
root partition fs and then using LABEL instead of /dev/xxx for the
kernel's root parameter.

For example (given your / is /dev/sda1 and that's where /boot is too):

# tune2fs -L myroot /dev/sda1

Then edit /boot/grub/menu.lst and replace under ## default kernel options:

# kopt=root=/dev/sda1

with

# kopt=root=LABEL=myroot

Run

# update-grub

Or, instead of menu.lst and update-grub, you can test the kernel option
by pressin e, while at grub boot menu and editing the kernel line
temporarily for that particular boot.

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Re: Virtualbox problem - Debian kernel header version?

[Sarunas Burdulis]

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Russell Gadd wrote:
> I'm trying to install Virtualbox Guest addtions and at one point the
> recommended install procedure says do
> aptitude install build-essential kernel-header-`uname -r`
> 
> The kernel-header bit comes out as kernel-header-2.6.18-6-686
> Aptitude reports "could'nt find any package whose name or description
> matched kernel-header-2.6.18-6-686"

Try kernel-headers-`uname -r` (with -s, plural) instead.

Sarunas
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Re: OT: Laptop for College Bound Student?

[Sarunas Burdulis]

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Thomas H. George wrote:
> The college is offering packages starting at $1,399 (Dell Latitude D630)
> and $1,499 (Lenoveo ThinkPad T61) all with 2GB memory, 10/100/1000
> Ethernet, Wireless, 1394 Port, Bluetooth, Vista 32Bit Business OS,
> SmartCare/4in1 Media Card Reader and Microsoft Office 2007 Professional
> pre-installed by certified technicians located on campus.  Three year
> warranty and 1GB Flash Drive thrown in.
> 
> Money is tight, of course.  If I were the student and there is a
> modest-priced laptop with Debian and OpenOffice I'd take it in a flash. 
> I'm not the student, I'm his 79 year old grandfather and I don't want
> him to start off at a disadvantage.  There are certainly many college
> students and recent grads that subscribe to this list.  I would value
> your insights.
> 
> Tom

Tom,

You can get a decent laptop for less. However the important question
here is what software is required by the college? Several people have
already mentioned that here. College may be using VPN, eTokens, Wi-Fi
security modes, various online teaching systems etc. which they (or
vendors) test in Windows only. I would try to find out such things
first. Are there any Linux-related wiki's/help pages/etc. on a college
website?---often these are created on department level webpages and
aren't really a part of the official support. These usually will
concentrate on such issues, for example
http://www.math.dartmouth.edu/software.

Sarunas

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Re: Lenny. How to join multiply Postscript files into one document?

[Sarunas Burdulis]

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Mark Goldshtein wrote:
> On Fri, Apr 10, 2009 at 9:53 AM, Stefan Monnier
>  wrote:
>>> Would you, please, help me to join multiple Postscript files into one
>>> document? I have several *.ps files  with formatted text and
>>> illustrations and want to collect them into a single document.
>> Not sure what the resulintg document should look like, but if by
>> "collect" you mean "append the pages", then "cat" might do the trick
>> (the resulting document should be proper Postscript but will not follow
>> the "Document Structuring Conventions").
> 
> Yes, thank you, I do mean "append the pages", but 'cat' also do not
> produces a good result. Probably, all pages from all files are there,
> but I can not see them. Only pages from the first document in a row. I
> am using 'evince' to display the pages.
> 
> As you have mentioned, resulting file is not follow the "Document
> Structuring Conventions".

*.ps files are source code of an interpreted language Postscript.
Usually they contain quite a bit of definitions, fonts etc. before pages
themselves are described. In general PS files can't be just concatenated
and still expected to make sense for the interpreter. The way to join PS
files should incorporate a Postscript interpreter. Ghostscript perhaps?.

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http://math.dartmouth.edu/~sarunas
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Re: Lenny. How to join multiply Postscript files into one document?

[Sarunas Burdulis]

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Mark Goldshtein wrote:
> On Fri, Apr 10, 2009 at 10:47 AM, Sarunas Burdulis
>  wrote:
>> *.ps files are source code of an interpreted language Postscript.
>> Usually they contain quite a bit of definitions, fonts etc. before pages
>> themselves are described. In general PS files can't be just concatenated
>> and still expected to make sense for the interpreter. The way to join PS
>> files should incorporate a Postscript interpreter. Ghostscript perhaps?.
> 
> Yes, thanks for tip but if you look at my message, which is started
> the tread, you may see:
> 
> MG>"Since googled first, I've tried:
> $ gs -q -dNOPAUSE -dBATCH -sDEVICE=pswrite -sOutputFile=program.ps
> part1.ps part2.ps part3.ps
> 
> But resulted document is x10 in size and looks like a rasterized one.
> There are serious paper format mismatches also. Do not fit my needs,
> anyway."
> ...

(Sorry for missing the top of the thread.)

It has to do with the 'pswrite' driver (its capabilities and/or
options). pswrite might be rasterizing at least part of the input.
Clearly it's interpreting input files and writing entirely new PS code
for the output. While output may look similar, the underlying PS code
will still be very different.

As for the paper size you might be able to get correct page size with gs
- -sPAPERSIZE= option --- just in case you haven't tried that yet...

Unless it's the original PS code that you want to preserve, I would use
PDF as an intermediate format. ps2pdf, merge PDFs, print to PS or just
leave in PDF --- it's an open format anyway...

- --
Sarunas Burdulis
Systems Administrator
Department of Mathematics, Dartmouth College
http://math.dartmouth.edu/~sarunas
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Re: How to enable userdir in apache2

[Sarunas Burdulis]

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T o n g wrote:
> Hi,
> 
> After upgrading to apache2 my userdir doesn't work any more. How to 
> enable it?  
> 
Take a look at symlinks in /etc/apache2/mods-enabled/ and where they
link to. You can make links for additional modules or use

# a2enmode 

Running a2enmode without a module name will invoke interactive mode,
displaying a list of available modules.

Šarūnas

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Re: Very slim Desktop Manager

[Sarunas Burdulis]

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Michael Ott wrote:
> Hi!
> 
> I am looking for a very slim desktop manager. 
> 
> The system looking for is a 486 166MHz with 64MB Ram.
> 
> I only want to run one or two small applications

If you really need a *desktop manager*, I can't add much to what was
already offered.

With two small applications, however, you probably can do with a window
manager. The specs you mention are those of a very capable PC in its own
time. I was happily using fvwm/twm on something less capable back then,
IIRC. I would try fluxbox.

Šarūnas



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Re: Very slim Desktop Manager

[Sarunas Burdulis]

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Miles Fidelman wrote:
> Sarunas Burdulis wrote:
>> Michael Ott wrote:
>>  
>>> Hi!
>>>
>>> I am looking for a very slim desktop manager.
>>> The system looking for is a 486 166MHz with 64MB Ram.
>>>
>>> I only want to run one or two small applications
>>> 
>>
>> If you really need a *desktop manager*, I can't add much to what was
>> already offered.
>>
>> With two small applications, however, you probably can do with a window
>> manager. The specs you mention are those of a very capable PC in its own
>> time. I was happily using fvwm/twm on something less capable back then,
>> IIRC. I would try fluxbox.
>>   
> Or, for that matter, just a shell prompt.
> 
Would you care to elaborate? Running Xorg/xinit and an X app is pretty
austere without window controls... not that it's useless, of course. Or
did you mean something else?

Šarūnas



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Re: playing multimedia over my local network - how?

[Sarunas Burdulis]

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H.S. wrote:
> Hello,
> 
> I am looking for a setup to play movies and music and to browse photos
> over my local home network (mostly Debian, one Ubuntu machine, sometimes
> a Windows machine on the wireless network). How do I start doing that?
> My objective is to have all multimedia on one disk connected to a
> machine (USB, firewire or SATA, not fixed yet).
> 
>>From a little search, I have seen somebody mention NFS for which I
> apparently need 2.6.27 kernel (not in Testing yet, so that option is
> out). The other option seems to be to stream video -- is this really
> necessary in this situation? And it won't help much with photo browsing
> anyway.
> 
> Mostly I connect between different machine via SSH. So I can open an X
> display. That gives the video but no sound on my local machine.
> 
> I have also samba setup on one machine which at present mounts a disk
> which has songs and photos on it. However, I haven't yet found a way to
> play the songs over samba. Also, by favorite photo browser is gqview but
> it also doesn't appear to understand samba.

Of course yo can find ways to mount your media-containing volume on any
of your home computers and then just use whatever players/viewers are
available on that particular OS/machine. NFS, SSHfs, CIFS/Samba will do.

Another approach would be to use a (standard) protocol to share media
itself, for example via UPnP, DLNA. FUPPES
(http://fuppes.ulrich-voelkel.de) and MediaTomb (http://mediatomb.cc)
are two such servers, which come into mind, but there most likely are
more. MythTV perhaps too. Using such an approach will make your media
available to any other UPnP/DLNA capable devices on your network, for
example, media player connected to TV/audio system (MythTV, PS3,
PopcornHour etc. etc.). I'm currently quite happy with MediaTomb on
Linux and PS3 setup.

Šarūnas

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Re: sandisk 8Gb card

[Sarunas Burdulis]

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Paul Cartwright wrote:
> I can't figure out how to mount this SD card in debian.
> My dell desktop has a slot in front to put in an SD card, and when I do, the 
> light comes on the front panel, so I ASSUME it is inserted correctly, but I 
> don't see anything in lsusb or lspci that says SANDISK, and I'm not sure what 
> the mount command would be..
> 
> any clues?

Most likely the slot reader uses an SD host controller (this should
appear in lspci output), not the USB bus. dmesg, kern.log may give you
some clues, but the real problem may be SDHC vs. SD, as Winfried already
pointed out.

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http://math.dartmouth.edu/~sarunas
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Re: CUPS printing without server?

[Sarunas Burdulis]

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Todd A. Jacobs wrote:
> Is it possible to set up a system as a cups client, e.g. without setting
> up a cups server? I want to be able to print to a remote cups server,
> but would prefer to avoid the overhead of running a local server just to
> talk to another cups backend.

You may have to tell your CUPS client where the server is by adding

ServerName 

to /etc/cups/client.conf

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Re: Scary article in Wall Street Journal today

[Sarunas Burdulis]

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Paul E Condon wrote:
> Today in Wall Street Journal (pg 3 in US edition), there is an article
> about hacker break-ins to computers via the internet. Mentioned as the
> method of break-in are spyware called ZeuS, and Firefox browser, but
> no mention of what OS are aflicted. 
> 
> I assume most of the affected computers are running some version of
> Microsoft Windows, but is this also a threat to Linux, and, in
> particular, Debian with Iceweasel? Where can I look to read a
> discussion in more detail than this issue merits on this list?
> e.g. How does ZeuS work? And what does it do?
> 
> TIA

Fresh from the net-security RSS feed:
http://www.net-security.org/secworld.php?id=8884

- --
Sarunas Burdulis
Systems Administrator
Department of Mathematics, Dartmouth College
http://math.dartmouth.edu/~sarunas
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Re: fglrx upgrade to 8.42.3

[Sarunas Burdulis]

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Davide Mancusi wrote:
> Chris Bannister ha scritto:
>> On Sun, Nov 04, 2007 at 10:51:33AM +0100, Jonathan Kaye wrote:
>>> You will have to stop the x-server and then restart it. In fact I had to
>>> reboot (aaarhhh) in order for the module to install correctly. Try
>>
>> Instead of having to reboot, you might get away with just a
>> dpkg-reconfigure 
>>
> 
> No, you need to reboot because you recompile the kernel module.
Shouldn't

# modprobe -r 
# modprobe 

suffice instead of reboot?

> Still, there might a way to avoid this but a simple dpkg-reconfigure
> won't help.

Module unload/load can be a part of package configuration perhaps?
Postinst script in .deb?

Sarunas

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Re: fglrx upgrade to 8.42.3

[Sarunas Burdulis]

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Davide Mancusi wrote:
> Sarunas Burdulis ha scritto:
>>> No, you need to reboot because you recompile the kernel module.
>> Shouldn't
>>
>> # modprobe -r 
>> # modprobe 
>>
>> suffice instead of reboot?
> 
> Errr, yes. I suppose it should. *hides in a corner*. So the right
> sequence for me would be
> # /etc/init.d/kdm stop
> # modprobe -r fglrx
> # modprobe fglrx
> # /etc/init.d/kdm start
> <...>
Starting kdm isn't that necessary, if you're just testing the new
driver/configuration. You can run just 'Xorg' to test whether X Window
starts (kill it with Ctrl+Alt+Backspace).

Sarunas
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Re: want to install a driver for my video card

[Sarunas Burdulis]

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tom arnall wrote:
> i want to install a driver for my video card ( Intel Corporation 82852/855GM 
> Integrated Graphics Device (rev 01) from 'lspci'). looking at the debian site 
> i find 'xserver-xorg-video-intel', but when i try to apt-get it i get:
> 
>   [EMAIL PROTECTED]:~$ apt-get install xserver-xorg-video-intel
>   Reading package lists... Done
>   Building dependency tree... Done
>   E: Couldn't find package xserver-xorg-video-intel
> 
> shouldn't anything available at the debian site be also available to apt?
No. It depends on your Debian sources' configuration, /etc/apt/sources.list.

# apt-cache search 
will show you what's available for your configuration.

What do you mean by the "debian site"? For Debian stable release with
all standard repositories enabled, there is no such thing as
xserver-xorg-video-intel. xserver-xorg-video-i810 exists however and may
be what you are looking for.

Sarunas

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Re: fglrx upgrade to 8.42.3

[Sarunas Burdulis]

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Davide Mancusi wrote:
> Sarunas Burdulis ha scritto:
>> Starting kdm isn't that necessary, if you're just testing the new
>> driver/configuration. You can run just 'Xorg' to test whether X Window
>> starts (kill it with Ctrl+Alt+Backspace).
> 
> Yeah, but if kdm is running and I kill X, it will restart it
> automatically. You need to kill kdm first, otherwise you will not have
> the chance to unplug/plug the recompiled module.
> 
> Davide
> 
That's correct. What I meant is that, once at the terminal and X/kdm
off, one can do 'Xorg' instead of '/etc/init.d/kdm start', when only
testing the new Xorg driver.

Sarunas




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Re: reading fdf files

[Sarunas Burdulis]

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Robert Jerrard wrote:
> On Fri, 2007-09-11 at 19:02 +0100, Florian Kulzer wrote:
>> On Fri, Nov 09, 2007 at 07:19:14 -0700, Robert Jerrard wrote:
>>> I understand that fdf files are dynamic pdf files that appear to need
>>> proprietary software from Abode to read them. Is there any open source
>>> applications that can convert as fdf file to a pdf?
>> pdftk can take the data in an FDF (form data file) together with the
>> corresponding PDF form and produce a new PDF file which has the form
>> fields filled in with the data from the FDF. (I am not sure if that is
>> what you want to do.)
> 
> I did see pdftk but I could not see the possibility of taking an fdf
> file only and converting it to a pdf (or some text file for that matter)
> which is what I was looking for.  
>
> This came up because of a form that was available on-line that only
> comes in an fdf version and the company refused to make it available in
> a pdf version also. Quite annoying since I doubt the people that might
> need this form would even know what an fdf was (I didn't before this
> happened) or have the software to handle it. Most of the users would
> not, I suspect, know what a pdf is for that matter.
> 
> Thanks for the suggestion, Bob

As far as I understand, FDF is not intended for "conversion to PDF".
It's merely a way of storing/transferring data corresponding to a given
PDF form within some PDF document. That is, there really is no "FDF
version" of PDF document. FDF is just the transient "stuffing" that can
be taken from or put into PDF with the appropriate form fields.

Sarunas

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Re: [OT] LaTeX

[Sarunas Burdulis]

Andrei Popescu wrote:
> On Sun, Nov 25, 2007 at 01:42:37PM -0500, Michael Pobega wrote:
>  
>> So far I've used the latex  command to compile a .dvi file for
>> viewing; What's the best way to process a .tex file into a .pdf?
> 
> I don't know if this is the best, but I found the option -output-format 
> to latex. You can specify dvi (default) or pdf. There might be a config 
> file somewhere that makes pdf the default.
> 
> Regards,
> Andrei

'pdflatex ' will produce latexfile.pdf.

Alternatively, use dvips (dvi->postscript) and then ps2pdf.

Sarunas


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Re: [OT] LaTeX

[Sarunas Burdulis]

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Michael Marsh wrote:
> On Nov 27, 2007 1:37 AM, Sarunas Burdulis <[EMAIL PROTECTED]> wrote:
>> 'pdflatex ' will produce latexfile.pdf.
>>
>> Alternatively, use dvips (dvi->postscript) and then ps2pdf.
> 
> One advantage of using pdflatex, rather than dvips+ps2pdf or dvipdf,
> is that you can add
> \usepackage{hyperref}
> to your preamble and get internal links in your PDF file based on the
> \label and \ref commands in your document.  I think it works for \cite
> as well.
> 
I haven't used it lately, but hyperref, by embedding PS code within
\special{}, used to work fine with dvips and Acrobat Distiller as far as
links, bookmarks and other PDF features.

Sarunas
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Re: How Linux becomes Windows

[Sarunas Burdulis]

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cothrige wrote:
> Dirk <[EMAIL PROTECTED]> writes:
> <...>
> The one I really don't understand though is avahi.  I kept seeing this
> in my ps output and really had no idea at all what it was.  I tried to
> find out, but couldn't.  Did the CIA write this thing?  Finally I turned
> it off too, and nothing exploded so far.  But, just what is all this
> stuff anyway?  Personally, I thought avahi was some sort of fruity
> shampoo my wife uses.

Forget the shampoo. Avahi is "how Linux becomes OS X".

;|

Šarūnas
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Re: autostarting a terminal.

[Sarunas Burdulis]

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On 10/02/2013 09:17 AM, peasth...@shaw.ca wrote:
> Given ~/.config/autostart/openaterminal.desktop containing
>   Exec=lxterminal
>   Terminal=false
> a terminal is opened on the desktop following login.
> 
> If the two lines changed to   
>   Exec=sh
>   Terminal=true
> no terminal is opened.  Nothing in /var/log/* contains "autostart".

There may be some clues in ~/.xsession-errors.

BTW, your second case .desktop worked fine as a test here in KDE.

Sarunas Burdulis
http://math.dartmouth.edu/~sarunas

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Re: New laptop...........

[Sarunas Burdulis]

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On 11/14/2013 02:35 PM, Charlie wrote:
> 
> Had to get a new laptop, my 7 year old Acer needs replacing bought a
> Toshiba C50D Satellite.
> 
> But can't get into the BIOS by the way that is posted on the net. Press
> F2 before powering up.
> [...]

If it's Windows-8, you may need to do a real shutdown first. Search for
'win 8 full shutdown toshiba', for example, to find out how it can be done.

Sarunas Burdulis
http://math.dartmouth.edu/~sarunas

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Re: Partitioning of new machine

[Sarunas Burdulis]

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On 08/08/2014 06:14 AM, B. M. wrote:
> Hi all,
> 
> While I'm waiting for the components of my new machine (testing/jessie)
> I'm thinking about the optimal partitioning scheme which should last for the
> next 10 years :-)
> 
> The system looks like:
> Haswell 3.4 GHz
> 8 GB RAM (later upgradeable up to 32 GB)
> 250 GB SSD
> 2 TB HDD
> 
> What do you think about the following:
> 
> === SSD: ===
> /boot   unencrypted, 300 MB
> /   ext4, encrypted, 25-30 GB
> /home   ext4, encrypted, keyfile, 220-225 GB
>   User data for two users

I would have one / ext4 partition for everything. (You may want a
separate /home, if you plan on reinstalling OS while keeping /home data,
but, on the other hand, one should also have daily backups to get /home
back from.)

If your new system uses EFI, then you'll also need a /boot_efi
partition, 200MiB, FAT32, bootable.

If I had swap, I would put it on SSD.

> === HDD (in this order for performance reasons): ===
> /varHDD, ext4, encrypted, keyfile, 25 GB
>   It's so large because I want to add a directory /var/src below /var
>   to compile a kernel on the HDD if necessary
> 
> /databases  HDD, ext4, encrypted, keyfile, barrier=0, 10 GB
>   Used for the db's of digikam (1 user), akonadi and amarok
>   (2 users each)

With these sizes they would go into SSD /.

> swapHDD, swapfs, encrypted, 5 GB (not hibernation)
> 
> /video  HDD, btrfs, 560 GB
>   Subvolumes:
> /video/editing
> /video/series
>   => for video editing or series, no backup, not encrypted
> 
> /data   HDD, btrfs, encrypted, keyfile, RAID1 (2 x 700 GB).
>   With subvolumes for digikam archive, movie archive and music

I don't know how much video editing can benefit from btrfs, but for
archives I would use two HDDs, and have btrfs partitions in btrfs-raid1
volume to protect from bit rot (see for example [1]).

Sarunas Burdulis
http://math.dartmouth.edu/~sarunas

1.
http://arstechnica.com/information-technology/2014/01/bitrot-and-atomic-cows-inside-next-gen-filesystems/


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Re: Troubles installing alongside Windows 8.1

[Sarunas Burdulis]

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On 08/27/2014 03:36 PM, Kevin O'Gorman wrote:
> I have a laptop that came with Windows 8.1, that uses "secure boot" (EFI)
> and GPT partitions.
> 
> Using windows tools, I shrank the main Windows partition.
> 
> Using the Xubuntu 14.04.1 AMD-64 Desktop DVD, I created a root and a swap
> partition in the hole I had created.  I installed Xubuntu.
> 
> Everything worked except the GRUB install.  When do the necessary bind
> mounts from the DVD and chroot into the laptop's hard drive, grub-install
> says it's installing for x86_64-efi (good!) but then complains that it
> cannot find the EFI partition.
> 
> But gdisk reports that partition 2 on the disk has code EF00, and gparted
> recognizes it as having a VFAT filesystem starting at sector 923648 and
> extending for 260 MiB  It looks normal to me.
> 
> What am I missing?

Is the EFI partition mounted on /boot/efi?

Sarunas Burdulis

http://math.dartmouth.edu/~sarunas
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Re: Flash and Firefox on Squeeze

[Sarunas Burdulis]

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On 02/27/2013 12:35 AM, Marc Shapiro wrote:
> I am running Squeeze on an AMD64 system.
> 
> I use actual Mozilla Firefox (18.0.2), NOT Iceweasel.

Most likely the culprit is architecture mismatch. Your plugins are
amd64, while Firefox might be i386, i.e. "32-bit" (at least that's the
default download option on www.mozilla.org/en-US). You might want to try
a 64-bit Firefox from, for example,
ftp.mozilla.org/pub/mozilla.org/firefox/releases.

> [...]

Sarunas Burdulis
http://math.dartmouth.edu/~sarunas
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Re: Starting Google Chrome

[Sarunas Burdulis]

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On 04/15/2013 07:09 PM, Ethan Rosenberg, PhD wrote:
> Dear list -
> 
> Installed Google Chrome.  Can start from the applications dropdown list.
> 
> 1] No desktop icon
> 2] Wish to be able to start from command line so that I can start it
> with a specific file.
> 
> A search on Google gives the start command as google-chrome.  I can't
> make it work.
> 
> rosenberg:/home/ethan# google-chrome %U
> bash: google-chrome: command not found
> 
> Any ideas?

Show what's installed:

dpkg -l \*google\* | grep ^i

Find out what has been installed from a given package,
e.g. from 'google-chrome-stable':

dpkg -L google-chrome-stable

Or filter for binaries:

dpkg -L google-chrome-stable| grep bin

Sarunas


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Re: Starting Google Chrome

[Sarunas Burdulis]

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On 04/15/2013 11:13 PM, Ethan Rosenberg, PhD wrote:
> On 04/15/2013 09:41 PM, Sarunas Burdulis wrote:
>> -BEGIN PGP SIGNED MESSAGE-
>> Hash: SHA1
>>
>> On 04/15/2013 07:09 PM, Ethan Rosenberg, PhD wrote:
>>> Dear list -
>>>
>>> Installed Google Chrome.  Can start from the applications dropdown list.
>>>
>>> 1] No desktop icon
>>> 2] Wish to be able to start from command line so that I can start it
>>> with a specific file.
>>>
>>> A search on Google gives the start command as google-chrome.  I can't
>>> make it work.
>>>
>>> rosenberg:/home/ethan# google-chrome %U
>>> bash: google-chrome: command not found
>>>
>>> Any ideas?
>>
>> Show what's installed:
>>
>> dpkg -l \*google\* | grep ^i
>>
>> Find out what has been installed from a given package,
>> e.g. from 'google-chrome-stable':
>>
>> dpkg -L google-chrome-stable
>>
>> Or filter for binaries:
>>
>> dpkg -L google-chrome-stable| grep bin
>>
>> Sarunas
>>
> ==
> Sarunas -
> 
> google-chrome not installed.
> 
> 1]How do I find out what is installed?

dpkg -l

> 2] ow do I properly install google chrome

Download from google.com (select Debian/Ubuntu package .deb).

As root, while in the directory where the downloaded file is,
run `dpkg -i downloaded_file`, e.g.:

dpkg -i google-chrome-stable_current_amd64.deb

If the above fails with dependency errors (not uncommon), then run:

apt-get -f install

which should install missing dependencies and then complete the
installation of google-chrome. This package from Google not only
installs google-chrome, but also adds Google's package repository to
your system, so the updates to google-chrome will be installed with
regular Debian package management tools.

Sarunas Burdulis
http://math.dartmouth.edu/~sarunas
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Re: a problem with CUPS

[Sarunas Burdulis]

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On 04/23/2013 10:27 AM, Paul Condon wrote:
> I have a rather complicated CUPS printing setup, which works, mostly,
> but not entirely:
> 
> My printer is an old HP 5MP, laser printer, which I purchased before HP
> invented the word "laserjet" because I was committed to Macintosh back
> then and the HP 5MP offered both parallel port and Apple Talk interfaces.
> 
> My current working desktop computer has neither of these. It is too new.
> And I don't think I have any Apple Talk cables any more. But I do have
> another, much older computer that does have a parallel port and an
> ethernet interface card. When I got my 'new' computer (one without
> parallel port) , I made the older computer into a 'print server',
> serving 'printing' over my LAN. It has worked well, except for times
> when new print software was released and I had to configure the CUPS
> soft ware. I have great difficulty comprehending CUPS.
> 
> My problem is that CUPS software does not handle .pdf files easily. If I
> try to print file, zyx.pdf, by typing "lpr zyx.pdf" , the command is
> accepted, the light
> flashes on the printer and after a while a piece of paper comes out of
> the printer ... but  it is -blank-. Evince also 'prints' only blank
> pages.  Pages from iceweasel, and emacs (including the fancy Postscript
> format) are printed correctly. But if I save the page to a file and then
> try to print the file, something prevents the black stuff from sticking
> to the print drum. Where is that something?
> 
> Ideas?
> TIA
> -- 
> Paul

Paul,

You may want to check CUPS error log at /var/log/cups/ on your print
server for any possible clues regarding PDF non-printing. Note the job
number for your PDF print job (lpq or lpstat on print server) and then
look for the entries with the same Job ID in CUPS error log.

I often see print errors for PDF files with partially embedded fonts.
Setting Adobe Reader to send all fonts at start cures this, but I'm not
sure if that option is available via lpr or lp.

You can try `lp` instead of `lpr`.

You can also try a different driver/PPD for your HP 5MP. Go to
http://your_print_server:631, Administration, Manage printers, select
printer, Admin., Modify. You might have a choice in between Gutenprint
and Foomatic/Postscript "models".

Sarunas Burdulis
http://math.dartmouth.edu/~sarunas

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Re: umbrello

[Sarunas Burdulis]

On 01/16/2014 10:48 AM, Verde Denim wrote:
> I'd like to setup umbrello, but my desktop is gnome. Do I need to change
> to kde in order for this to work? If not, will the install bloat the
> filesystem with a full kde installation? Thanks for the input.

You don't need to change to KDE, and the install won't pull in the full
KDE. It will install quite a few dependencies. You can try a "dry run",
i.e. simulate install without actually installing anything by:

apt-get -s install umbrello

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Department of Mathematics, Dartmouth College
http://math.dartmouth.edu/~sarunas


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Re: Backup solutions without reinventig the wheel these days

[Sarunas Burdulis]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256

On 10/20/2015 12:57 PM, Ondřej Grover wrote:
> Hello,
> 
> I'm looking for recommendations for backup solutions that don't reinvent
> the wheel and are reliable and used. I want to backup two servers to a
> backup server. The main data content is several hundred GB in many very
> small files.
> 
> [...]
> 
> I've also looked at the new kids on the block like obnam, attick and
> borgbackup. They look interesting, but I prefer time-tested SW for backups.
> After realizing that these new backup programs pretty much try to
> replicate features of btrfs or ZFS (incremental snapshots, block-level
> compression and deduplication) I started thinking that I could perhaps
> just send the data to the backup server via rsync and save them to a
> btrfs or ZFS (but the backup server may not have enough RAM for ZFS) and
> create daily snaphosts on the server. If memory will permit (if I
> optimize it), I'd go with ZFS as it should be more reliable. Does
> anybody use such a solution?

Yes, we do use pretty much the setup you describe, i.e. rsync push to
backup server, btrfs volume with daily snapshot subvolumes on the
server. This particular setup has been in use for more than two years by
now, and is working well with 8-10 servers (totals for all backed-up
filesystems is about 1.2TiB/2.5M files of varying size; transferred
daily delta is of course just a fraction of this). The backup server is
a rather modest self-built Mini-ITX Core i5 with 8GiB RAM and 6TiB
hardware (3ware) RAID-10 storage volume.

Using btrfs volume in btrfs-raid configuration (raid-1 for data and
metadata) would provide protection against data bit-rot. We use several
such volumes on some of our severs, though not in combination with btrfs
snapshot subvolumes.

- -- 
Sarunas Burdulis
http://math.dartmouth.edu/~sarunas
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Re: Backup solutions without reinventig the wheel these days

[Sarunas Burdulis]

On 10/21/2015 05:32 AM, Ondřej Grover wrote:
> [...]
> Your btrfs setup sounds interesting, Sarunas. Are you running those
> btrfs volumes on Jessie? Any stability issues? Do you think it could
> work with just 1GB RAM + 1 GB swap? I was thinking about doing
> out-of-band deduplication to conserve RAM. Do you use both compression
> and deduplication (file or block level)? I heard they don't play nicely
> together. Could you share your mount options?

Our backup server is actually running Linux 3.13.0-66-generic, Btrfs
v3.12 — Ubuntu 14.04.3 LTS, which is behind Jessie in software versions.
It has been very stable — for the past too years it's running as a
headless box in an off-site location.

We don't use compression or deduplication. In-band dedup is not in btrfs
3.*, and I haven't tried any out-of-band tools. Nothing particular in
Btrfs mount, the only non-default options in 'noatime':

LABEL=BACKUPS /backups btrfs noatime 0 0

1GB RAM sounds low by today's habits. That doesn't mean it won't work,
but just begs for RAM upgrade.

Sarunas

> On Tue, Oct 20, 2015 at 8:35 PM, Sarunas Burdulis
> mailto:saru...@math.dartmouth.edu>> wrote:
> 
> On 10/20/2015 12:57 PM, Ondřej Grover wrote:
>> Hello,
> 
>> I'm looking for recommendations for backup solutions that don't reinvent
>> the wheel and are reliable and used. I want to backup two servers to a
>> backup server. The main data content is several hundred GB in many very
>> small files.
> 
>> [...]
> 
>> I've also looked at the new kids on the block like obnam, attick and
>> borgbackup. They look interesting, but I prefer time-tested SW for backups.
>> After realizing that these new backup programs pretty much try to
>> replicate features of btrfs or ZFS (incremental snapshots, block-level
>> compression and deduplication) I started thinking that I could perhaps
>> just send the data to the backup server via rsync and save them to a
>> btrfs or ZFS (but the backup server may not have enough RAM for ZFS) and
>> create daily snaphosts on the server. If memory will permit (if I
>> optimize it), I'd go with ZFS as it should be more reliable. Does
>> anybody use such a solution?
> 
> Yes, we do use pretty much the setup you describe, i.e. rsync push to
> backup server, btrfs volume with daily snapshot subvolumes on the
> server. This particular setup has been in use for more than two years by
> now, and is working well with 8-10 servers (totals for all backed-up
> filesystems is about 1.2TiB/2.5M files of varying size; transferred
> daily delta is of course just a fraction of this). The backup server is
> a rather modest self-built Mini-ITX Core i5 with 8GiB RAM and 6TiB
> hardware (3ware) RAID-10 storage volume.
> 
> Using btrfs volume in btrfs-raid configuration (raid-1 for data and
> metadata) would provide protection against data bit-rot. We use several
> such volumes on some of our severs, though not in combination with btrfs
> snapshot subvolumes.
> 
> --
> Sarunas Burdulis
> http://math.dartmouth.edu/~sarunas

Re: Backup solutions without reinventig the wheel these days

[Sarunas Burdulis]

On 10/21/2015 10:47 AM, Ondřej Grover wrote:
> I could try to request a RAM upgrade (not super easy in uni environment,
> but doable), but it goes against my understanding of what a storage
> server is. In my book, a storage server needs fast IO capabilities
> (storage drives and NIC) and possibly CPU for compression. Deduplication
> is the only reason I could think of higher RAM requirements on a storage
> server.

This morning I added a 'memory' plugin to the Munin node on the server I
described. Here is a snaphot so far, for what it's worth. The bump at
9:50 is an rsync from one of the biggest filesystems backed-up (~600GiB,
about a million files to sync).

https://math.dartmouth.edu/owncloud/index.php/s/E3VYxhWlCqUusn4

> Sarunas, did you have good experiences with actually using the backups
> for restoring? 

Whenever I needed them, backup copies were available. This is more of an
archival storage. The main point for using btrfs was instantaneous
snapshot creation (and removal of older ones, something that takes
'forever' in rsync --link-dest scenario, using rsnapshot, for example).

Sarunas

> On Wed, Oct 21, 2015 at 4:28 PM, Sarunas Burdulis
> mailto:saru...@math.dartmouth.edu>> wrote:
> 
> On 10/21/2015 05:32 AM, Ondřej Grover wrote:
> > [...]
> > Your btrfs setup sounds interesting, Sarunas. Are you running those
> > btrfs volumes on Jessie? Any stability issues? Do you think it could
> > work with just 1GB RAM + 1 GB swap? I was thinking about doing
> > out-of-band deduplication to conserve RAM. Do you use both compression
> > and deduplication (file or block level)? I heard they don't play nicely
> > together. Could you share your mount options?
> 
> Our backup server is actually running Linux 3.13.0-66-generic, Btrfs
> v3.12 — Ubuntu 14.04.3 LTS, which is behind Jessie in software versions.
> It has been very stable — for the past too years it's running as a
> headless box in an off-site location.
> 
> We don't use compression or deduplication. In-band dedup is not in btrfs
> 3.*, and I haven't tried any out-of-band tools. Nothing particular in
> Btrfs mount, the only non-default options in 'noatime':
> 
> LABEL=BACKUPS /backups btrfs noatime 0 0
> 
>     1GB RAM sounds low by today's habits. That doesn't mean it won't work,
> but just begs for RAM upgrade.
> 
> Sarunas
> 
> > On Tue, Oct 20, 2015 at 8:35 PM, Sarunas Burdulis
> > mailto:saru...@math.dartmouth.edu>
> <mailto:saru...@math.dartmouth.edu
> <mailto:saru...@math.dartmouth.edu>>> wrote:
> >
> > On 10/20/2015 12:57 PM, Ondřej Grover wrote:
> >> Hello,
> >
> >> I'm looking for recommendations for backup solutions that don't
> reinvent
> >> the wheel and are reliable and used. I want to backup two servers
> to a
> >> backup server. The main data content is several hundred GB in
> many very
> >> small files.
> >
> >> [...]
> >
> >> I've also looked at the new kids on the block like obnam, attick and
> >> borgbackup. They look interesting, but I prefer time-tested SW
> for backups.
> >> After realizing that these new backup programs pretty much try to
> >> replicate features of btrfs or ZFS (incremental snapshots,
> block-level
> >> compression and deduplication) I started thinking that I could
> perhaps
> >> just send the data to the backup server via rsync and save them to a
> >> btrfs or ZFS (but the backup server may not have enough RAM for
> ZFS) and
> >> create daily snaphosts on the server. If memory will permit (if I
> >> optimize it), I'd go with ZFS as it should be more reliable. Does
> >> anybody use such a solution?
> >
> > Yes, we do use pretty much the setup you describe, i.e. rsync push to
> > backup server, btrfs volume with daily snapshot subvolumes on the
> > server. This particular setup has been in use for more than two
> years by
> > now, and is working well with 8-10 servers (totals for all backed-up
> > filesystems is about 1.2TiB/2.5M files of varying size; transferred
> > daily delta is of course just a fraction of this). The backup
> server is
> > a rather modest self-built Mini-ITX Core i5 with 8GiB RAM and 6TiB
> > hardware (3ware) RAID-10 storage volume.
> >
> > Using btrfs volume in btrfs-raid configuration (raid-1 for data and
> > metadata) would provide protection against data bit-rot. We use
> several
> > such volumes on some of our severs, though not in combination with
> btrfs
> > snapshot subvolumes.
> >
> > --
> > Sarunas Burdulis
> > http://math.dartmouth.edu/~sarunas
> 
> 


-- 
Sarunas Burdulis
Systems Administrator
Department of Mathematics, Dartmouth College
http://math.dartmouth.edu/~sarunas

Re: Backup solutions without reinventig the wheel these days

[Sarunas Burdulis]

On 10/22/2015 02:47 AM, Ondřej Grover wrote:
> Thank you Sarunas for the graphs, it is most illuminating. That's pretty
> much how I imagine a storage server should behave.
> Atomic snapshots are very appealing indeed. In my case cp -lr or
> --link-dest solutions would take a long time as the FS hierarchy is both
> very broad and deep.

Ondřej, you're are welcome. “For the sake of science” I restarted the
backups' server yesterday with a kernel boot parameter mem=1G. All the
nightly rsync jobs and btrfs snapshot manipulations went as usual, and
the server is running fine:

https://math.dartmouth.edu/owncloud/index.php/s/fYO81CfmuV5yrpZ

So 1G RAM might still do just fine for such basic tasks.

-- 
Sarunas Burdulis
Systems Administrator
Department of Mathematics, Dartmouth College
http://math.dartmouth.edu/~sarunas

Re: getting mail from Exchange/Outlook

[Sarunas Burdulis]

On 2017-09-13 15:32, Steve Kleene wrote:
> My employer is forcing me to shut down my long-time Linux mail server.  I
> have no choice in the matter.
> 
> My employer uses Microsoft Exchange/Outlook for mail.  They have an Outlook
> Web App (OWA) that I can access from Firefox, but as far as I can tell you
> cannot save a file to the local disk with OWA.  That makes OWA pretty
> useless.  The documentation, if it can be believed, says that I can access
> Outlook with POP3 and IMAP4 programs including Thunderbird.
> 
> If any of you have experience and/or advice with this problem, I'd be
> grateful to hear it.

I'm accessing Exchange mail account via IMAP (Thunderbird). Exchange
server settings can probably differ, but, while in OWA, it is worth
checking

Options → Mail → Accounts → POP and IMAP

where you might find settings for configuring IMAP and SMTP in your
email app.


-- 
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Systems Administrator, Dartmouth Mathematics
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signature.asc
Description: OpenPGP digital signature

Re: Skip file content checking in rsync

[Sarunas Burdulis]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Gabor Heja wrote:
> Hi all,
> 
> I have a setup where the disk is filled with great files. I would like to
> use rsync to backup my data, but when rsync detects a file with different
> content it starts to copy the matching parts of that file to a temporary
> file and transfer the differences only and finally replaces the original
> with the temp file. Of course this is the normal behaviour of rsync, but
> when there is not enough free space on the target disk for the duplicate
> rsync fails.
> 
> I have read the manual, google'd around and have not found any way to solve
> this thing with rsync.
> 
> Is there any way I could tell the rsync to not use this method, so not
> duplicate but delete the target file and transfer the whole?
> ...

Check --inplace and --whole-file options in rsync manual.

- --
Sarunas Burdulis
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http://math.dartmouth.edu/~sarunas
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Re: openvpn connection with virtualbox 3

[Sarunas Burdulis]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Umarzuki Mochlis wrote:
> I can' seem to follow the article
> on http://www.virtualbox.org/wiki/OpenVPN_on_VBox especially when the
> example command formatting somehow confusing. I tried 
> cat< debianvm.conf dev tun ifconfig 10.8.0.5 10.8.0.6 keepalive 10
> 60 port 1195 EOF 

That should be:

cat << EOF > debianvm.conf
dev tun
ifconfig 10.8.0.5 10.8.0.6
keepalive 10 60
port 1195
EOF

Or just paste the four lines (dev... to port...) to debianvm.conf file.

- --
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Re: Ubuntu 8.10 sees my home partition, sid of Dec. 25 doesn't

[Sarunas Burdulis]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Paul Scott wrote:
> green wrote:
>> ... ... ...
>> I don't recall seeing the output of 'fdisk -l' on the sid system;
>> perhaps it would list disk sda instead of hda.
>>
>> Try 'mount /dev/sda10 /home' on the sid system.  If that works, change
>> hda10 in /etc/fstab to sda10.
>>   
> 
> There is no /dev/sda10 in my sid system.  I verified this with:
> 
> ls /dev/sd and [tab]
> ... ... ...

- From sid, in 'single' mode, you could run 'fdisk -l', 'blkid' to see
what disk/partitions were recognized by the kernel, hd* or sd*,
partition numbers, IDs etc. Then you can try mounting or fsck if mount
complains about filesystem being dirty.

- --
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Systems Administrator
Department of Mathematics, Dartmouth College
http://math.dartmouth.edu/~sarunas
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Re: GMail backup on debian

[Sarunas Burdulis]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

On 01/17/2011 04:45 AM, Mathieu Malaterre wrote:
> Hi there,
> 
>   Last week I decided to back up some of my mails from my gmail
> account. I remember that there used to be gmailfs mechanism for this.
> However the package is not available on my debian/squeeze anymore.
>   I also tried using the imap service, using evolution, but it became
> quickly a nightmare (it is just impossible to retrieve just a single
> mail). I even selected 'Basic Headers' from the IMAP headers
> preferences in evolution.
> 
>   What are other people using when there gmail mailbox is becoming big ?
> 
> Thanks !

I use Thunderbird with several IMAP accounts, including Gmail. Moving
mail is usually a matter of drag'n'drop. I use Thunderbird's Local
Folders to copy mail into local MBX files for backups and personal archives.

- -- 
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Systems Administrator
Department of Mathematics, Dartmouth College
http://math.dartmouth.edu/~sarunas
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Re: Chromium Browser in Sid

[Sarunas Burdulis]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

On 05/26/2010 09:36 AM, David Baron wrote:
> A poster rightly noted that chromium is NOT google chrome.
> 
> Installed it (still in 5.). Looks like Google's. Taste's like it. I do 
> believe it loads up noticeably faster (was not that the whole point of 
> chromium in the first place?). Flash seems more reliable as well (I 
> understand 
> why Apple prefers to avoid it!).
> 
> So before I decide which one to keep, how can I get them to share the same 
> configuration, options, extensions, etc. Doing that will enable a real 
> comparison? Where do they keep this data?

~/.config/{chromium,google-chrome}. As a test I replaced
~/.config/google-chrome with a symlink to ~/.config/chromium, but upon
start g-chrome seems to delete any extensions installed by chromium...

- -- 
Sarunas Burdulis
Systems Administrator
Department of Mathematics, Dartmouth College
http://math.dartmouth.edu/~sarunas
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Re: debian print server

[Sarunas Burdulis]

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Arafangion wrote:
> On Wednesday 21 December 2005 01:53, Clive Menzies wrote:
> 
> 
>>Well, you don't need X; use lynx as a browser and use cups and if you're
>>serving windows clients, samba.
> 
> 
> I have a suspicion that windows no-longer requires samba for IPP printing, 
> but 
> have yet to confirm this.
> 
Yes you can configure idividual IPP printers on the net. samba is needed
when you want Windows users to find/browse printers (centrally managed
by the CUPS server on *NIX box) in the Network Neighbourhood.

Or does Windows support CUPS browsing now?

Sarunas



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Re: group callander program

[Sarunas Burdulis]

-BEGIN PGP SIGNED MESSAGE-
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Ron Johnson wrote:
> On Mon, 2006-01-16 at 11:13 -0600, Rodney Richison wrote:
> 
>>I find many programs as I'm googling for a simple callendar program.
>>Would like advice on what you guys find usefull.
>>
>>I seen thunderbird callendar.
>>kdepim
>>
>>These are easy to install. Work with a group. What would you use to
>>connect in a multi-platform 10-user office. Also offering the ability to
>>sync from offsite locations.
> 
> 
> Evolution is supposed to integrate well with WebDAV-enabled Apache,
> but looks like it might be broken.
I wasn't able to use Evol. in SSL/TLS mode, which we need to
authenticate with Apache. Mozilla Calendar (Debian Sid, Ubuntu Breezy)
and Sunbird (Mac OS 10.4) work fine though.

Sarunas Burdulis
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Re: strange outbound connection

[Sarunas Burdulis]

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johannes wrote:
> Tim Hardy wrote:
> 
>> johannes wrote:
>>
>>> Magnus Pedersen wrote:
>>>
>>>> johannes wrote:
>>>>
>>>>> The gui of my firewall reports a strange outbound connection on
>>>>> port 1054 to a strange IP.
>>>>>
>>>>> How could I determine which process matches this connection?
>>>>> How could I determine if this is something worrying?
>>>>>
>>>> netstat -plant | grep 1054
>>>>
>>> ...shows nothing.
>>>
>>> I guess it's a problem of firestarter (firewall gui)???
>>>
>>
>> What exactly is the firewall saying? What IP is the connection being
>> made to? I don't know firestarter so I can't really comment on that
>>
>> Are you running netstat while the firewall is registering activity or
>> afterwards? Or is the firewall blocking this connection. netstat will
>> only show currently active connections afaik
> 
> 
> The firewall is on and displaying this funny open connection, while it
> is not shown in netstat.
> 
>> Try running ethereal too to see if you can capture any packets sent on
>> this connection - it might give you a better clue
> 
> 
> I just ran ethereal for about an hour with no trace on that particular
> host.
> 
> The firewall (firestrarter gui to be precise), just shows a line in
> active connections (ie. NOT in blocked connections) with an 'unknown
> service' on port 1056 to that external host. I'm just wondering how
> firestarter knows about this connection.
> 
> I don't know how to proceed. Maybe it's just a bug in firestarter to be
> ignored?
> 
> Johannes
What about `lsof -i`?

Sarunas Burdulis
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Re: Photo collection management

[Sarunas Burdulis]

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Adam Hardy wrote:
> Nils Erik Svangård on 18/01/06 15:17, wrote:
> 
>> Have you tried f-spot?
>> /nisse
>>
>> On 1/17/06, *Piotr Kopszak* <[EMAIL PROTECTED]
>> > wrote:
>>
>> Couple of days ago I decided  (evidently too late!) that the
>> amount of
>> pictures on CD-ROMs  and on my disks has attained  critical mass
>> and I
>> no  longer   am  able   to  get  any   orientation  whatsover  
>> in  my
>> pictures. That's probably the moment when most other people also
>> think
>> about finally  starting to use some collection  management
>> software. I
>> spent  couple of  days looking  but haven't  find anything  that
>> would
>> really suit my needs, that is:
> 
> 
> 
> I just save my jpgs onto my harddrive. Have about 5 years worth now. Not
> so much, about 2 gigs worth / 2000 files. Labelled them all by date and
> with a v. v. short desc. Doesn't help you I know but even I'm not happy
> with it anymore.
> 
> Apparently Adobe's photolibrary is meant to be really good, although I
> haven't seen it or have a clue if anyone's written a clone in linux.
> 
> i'd be interested to know if there's some sort of jpg metatag system as
> for mp3s.
> 
EXIF?
http://park2.wakwak.com/~tsuruzoh/Computer/Digicams/exif-e.html#AboutExif

Sarunas
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Re: Network card recommendation

[Sarunas Burdulis]

Hans du Plooy wrote:
> Gnu-Raiz wrote:
> 
>> Cpu nic usage is a little moot, with dual core chips,
> 
> Well, I have seen the following.  Pentium-III 1ghz with 3com nic, maxing
> the CPU under heavy network (100mbit) load such as copying stuff over
> samba/nfs.  AthlonXP 2ghz (2400+) with marvel gigabit controller,
> copying files to another marvel gigabit chip (both on ASUS boards, the
> target machine being an Athlon64 3200+ 2.2ghz), also maxing the CPU on
> both ends, and getting only about 15MB/s.  SUSE running on the Athlon,
> Gentoo on the Athlon64.
So is the CPU load caused by the copying program (scp, rsync, samba,
nfs) or by the driver? How should this be determined?

Sarunas


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SATA software RAID recovery problem

[Sarunas Burdulis]

Hello,

I'm trying to add SATA software RAID-5 to a system, which boots an runs
off an internal IDE HD (storage space provided by the RAID is intended
for backups and archives). It's a Pentium4 2.4GHz Dell desktop, 1GB RAM.
SATA adapter is Promise SATAII-150 TX4. Debian unstable, kernel
2.6.14-2, mdadm 1.12.

RAID is created by
# mdadm -C /dev/md0 -l5 -n4 -x0 /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sdd1
and seems to work fine (create ext3 on md0, mount, rsync ~100G of files).

I'm trying to simulate a disk failure then:
# mdadm /dev/md0 -f /dev/sdb1
# mdadm /dev/md0 -r /dev/sdb1

The disk is properly marked as faulty, then removed, array continues to
function well. However, when I try to add a "replacement" disk
(--zero-superblock before that), i.e.:
# mdadm /dev/md0 -a /dev/sdb1
the system encounters

ataX: status=0x51 { DriveReady SeekComplete Error }
ataX: error=0x40 { UncorrectableError }

at 2.8% of array reconstruction. sdX1 corresponding to ataX is
eventually (after a large number of above errors) marked as faulty and
/dev/md0 is stopped. The error is not on the disk which is being added.
This looks like a hard disk problem, but, after switching disks on SATA
channels and using just 3 disks (instead of 4), I'm still getting the
same error on a random disk. Also, even that I use -x0 (no spare drives)
option, RAID-5 is still always created with a spare. Activating the
spare will always succeed and it looks like essentially the same process
as adding a replacement disk.

I have tried this with sata_promise.ko and ulsata2.ko (open source
driver from Promise), Debian Sid, Ubuntu Breezy and openSUSE 10 and also
by moving RAID to another identical Dell system with the same results.

Has anybody experienced something similar? Why would the problem surface
on array reconstruction only? Any ideas on what else to test?

I would suspect SATA adapter, if the array wouldn't be working well
until reconstruction is attempted. BTW, Promise eSupport site only gives
 a permanent "Please wait..."---anybody had a better luck there?

I will most likely be looking for a different SATA adapter. Any
recommendations here?

Thanks in advance,

Sarunas Burdulis
Systems Administrator
Department of Mathematics
Dartmouth College


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Re: OpenCL with Radeon GPU

[Sarunas Burdulis]

On 4/24/23 14:02, Arno Lehmann wrote:

Hi all,

I'm currently trying to set up a new workstation and wanted to enable 
OpenCL for future use.


GPU hardware is an AMD Radeon RX 6750 XT.

I have a base installation of Debian 12 up and running, kernel 6.1.0.7 
including amdgpu and Mesa 22.3.


Any attempt to actually run any OpenCL program results in an error:

fatal error: cannot open file 
'/usr/lib/clc/gfx1030-amdgcn-mesa-mesa3d.bc': No such file or directory


which is depending on the using program reported more or less easily 
visible. clinfo is sufficient to show this.


Trying to diagnose this with available documentation I learned that
- I am not even able to determine if OpenCL itself should work,
- if it should work with the hardware I have here,
- which versions of amdgpu, xserver, Mesa, llvm or clang I need or which 
particular drivers / packages to install


I have tried several versions of the possible packages, but lacking 
documentation that makes sense to me that was more like blindly poking 
in the dark.


I even tried following some advice to use AMD's out-of-kernel driver 
pack, but the installation script stumbles over dependencies (which may 
or may not be due to the not-yet-stable base distro).


Anyway, the current state is less than satisfying, because I don't even 
understant if OpenCL with Radeon RX 6xxx GPU can even work on Linux.


I would give a different distro a try, but as a mostly-Debian-person I'm 
not really inclined to start learning to maintain more distros. Just 
using Windows would be a solution I would not appreciate at all...


So, my question here: Can anybody confirm this can work in general, or 
even point me to a place for current, correct documentation?


Yes, in general OpenCL for current AMD GPUs works with the open source 
Linux kernel's amdgpu.ko module. On Ubuntu one can install ROCm from 
AMD's repositories


`apt install rocm-opencl-runtime`

which is open source well, but not in standard repositories. Not sure if 
that extends to Debian.


I don't know if this can be substituted in any degree by Mesa.

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Re: Debian support for AMD GPU applications

[Sarunas Burdulis]

On 4/25/23 01:30, jeremy ardley wrote:
Is there any reliable source of information to install computational 
back-ends using AMD GPUs on Debian 11?


I have found some references to packages such as rocm-dev on 
repo.radeon.com but they are all ubuntu related and won't install in 
Debian 11.


In the end I want to run tensorflow, pytorch, opencv etc at full speed 
using a GPU.


I haven't tested on Debian 11, but on a fresh install of Debian 12 
adding repositories as for Ubuntu as described here just works:


https://docs.amd.com/bundle/ROCm-Installation-Guide-v5.4.3/page/How_to_Install_ROCm.html

Then `apt install rocm-opencl-runtime` to use ROCm OpenCL with an 
upstream kernel module (amdgpu.ko), i.e. no DKMS to recompile it from 
AMD's sources.


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Re: OpenCL with Radeon GPU

[Sarunas Burdulis]

Which leaves me with one question for this mail thread: Can anybody
recommend a test program for OpenCL functionality?


There are tests from Khronos:
https://github.com/KhronosGroup/OpenCL-CTS

It's seems to be over 50 tests and then subtests. There are presets to 
run different test suites from a Python script.


I ran only some random ones with ROCm and Mesa OpenCL, using Vega64 or 
RX 5700 XT.


All tested fine with ROCm OpenCL. Mesa OpenCL failed some with Vega64 
and then most tests with the RX 5700 XT...


This is Debian 12.

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Re: package managers problem

[Sarunas Burdulis]

On 6/20/23 10:51, gene heskett wrote:

Easy:
gene@coyote:~/Pictures$ sudo synaptic
[sudo] password for gene:
Invalid MIT-MAGIC-COOKIE-1 keyUnable to init server: Could not connect: 
Connection refused

Failed to initialize GTK.
[...]


So perhaps copy that cookie into /root/?:

sudo cp /home/gene/.Xauthority /root/

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Re: How to create /home BTRFS subvolume on a second disk during installation?

[Sarunas Burdulis]

On 7/27/23 07:14, debian-u...@howorth.org.uk wrote:

[...]
Your image shows that you have three persistent partitions:
/dev/nvme2n1p1 - /boot/efi - vfat
/dev/nvme2n1p3 - / - btrfs
/dev/nvme1n1p1 - /home - btrfs

So that all looks like it's been created exactly as you wished.
The partitioning is not your problem.

I'm sorry but I don't know what might produce messages about HOME not
being found, or the reasons for that.

> [...]

Home partition not being mounted, for example. A look at /etc/fstab 
might help.


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Re: LibreOffice removed from Debian

[Sarunas Burdulis]

On 4/17/24 09:12, Vincent Lefevre wrote:

Is there any reason why LibreOffice has been removed from Debian???


Seems still to be included in unstable and experimental:

$ apt policy libreoffice
libreoffice:
  Installed: 4:24.2.2-3+b1
  Candidate: 4:24.2.2-3+b1
  Version table:
 *** 4:24.2.2-3+b1 500
500 http://deb.debian.org/debian sid/main amd64 Packages
100 /var/lib/dpkg/status
 4:24.2.2~rc2-2 1
  1 https://deb.debian.org/debian experimental/main amd64 Packages


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Re: Creating PDF/A from LaTeX source and from existing PDF

[Sarunas Burdulis]

On 7/3/24 09:06, Ceppo wrote:

I wrote a report with LaTeX, and afterwards discovered it must be
PDF/A-compliant - which wasn't. I found the pdfx LaTeX package and followed its
instructions, thus obtaining a file that should be PDF/A and pdfinfo identifies
as such, but my employer's upload form thinks isn't. Is pdfinfo reliable enough
that I can tell my employer his form is broken? If not, how can I make sure
that pdflatex's output is actually PDF/A-compliant?


pdfinfo probably only reads metadata, but does not do any PDF/A 
compliance validation.


VeraPDF seems to work for validation (https://verapdf.org/software/).

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Re: nginx or apache for php?

[Sarunas Burdulis]

On 8/1/24 07:35, Walt E wrote:

Hello

I have been using apache2 + php for years under debian. But I heard
people says nginx + php has better performance.


That is not true:

1. https://people.apache.org/~jim/presos/ACNA11/Apache_httpd_cloud.pdf
2. 
https://www.slideshare.net/slideshow/choosing-a-proxy-server-apachecon-2014/33506168


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Re: Help with UDF and BluRay disks

[Sarunas Burdulis]

Are you trying to script/automate?

If not, just use xfburn (GUI). I'm writing Bluray 25GiB M-disks using 
xfburn regularly (archiving a backups' snapshot directory on NAS).


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