Richard Shaw <[email protected]> wrote on 03/20/2012 05:26:56 PM:
> On Tue, Mar 20, 2012 at 4:06 PM, Timothy J Massey <[email protected]>
wrote:
> >
> > "Jeffrey J. Kosowsky" <[email protected]> wrote on 02/10/2012
> 10:35:17 AM:
> >
> > > Seems trivial to me (plus or minus some buffering delay)...
> > >
> > > tail -n +0 -f /path/to/XferLog.Z | BackupPC_zcat
> >
> > I just tried your "trivial" command. It works, sorta: only after
> it tails the *entire* file. The problem with that is, some of my
> XferLog file have *millions* of lines... Kinda hard to quickly
> check the end of the file that way--unless you want to wait minutes
> for it to scroll the entire file...
>
> What about:
> BackupPC_zcat /path/to/XferLog.Z | less
>
> Seemed to work for me but my logs aren't very big.
That does the same thing: you have to read and parse the entire file to
get to the end. Hitting <END> makes it go to the bottom a little faster
(no screen I/O), but it still takes a while...
When you do a "tail -f <file to tail>", it skips to the (almost) end,
displays the last few lines and sits there waiting for more data. When
the data appears, it shows it to you. *Very* handy for monitoring very
long backups to know where you are in the process. You can leave it
running in a terminal window and glance at it instantly. I've lost that
with the compressed log format.
All to save a few hundred megabytes on a server with multiple
*terabytes*...
> Also, an oddity. All my logs end with lower case z not Z.
Mine are .z as well. It was most likely a mistake in the original
command.
Tim Massey
Out of the Box Solutions, Inc.
Creative IT Solutions Made Simple!
http://www.OutOfTheBoxSolutions.com
[email protected]
22108 Harper Ave.
St. Clair Shores, MI 48080
Office: (800)750-4OBS (4627)
Cell: (586)945-8796
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