> At 9:24 PM -0500 5/20/02, ABrady wrote:
> >On Mon, 20 May 2002 18:38:55 -0700
> >Patrick Beart <[EMAIL PROTECTED]> wrote:
> >
> > > ...snip...
> > > at boot up (Enigma), I get the sound server "Informational"
> > > alert that there was a problem initializing the sound driver.
> > > Device"/dev/dsp can't be opened (no such device)", blah, blah,
> > > blah....snip...
> > > found the info on running "sndconfig". Trouble is that
> > > following
> >> instructions (to type "sndconfig" at the command line) resulted
> >in> the message ...
> > > "bash: sndconfig: command not found."
> >> ...snip...
> >
> >
> >echo $PATH
> >
> >I'd bet /usr/sbin isn't in there. And if you logged in as $USER and
> >used su to get to root, /sbin won't be there either.
>
>
> Well that appears to be incorrect:
>
> ---------
>
> /usr/lib/courier/bin:/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin:/h
> ome/patrick/bin
>
~~~~~~~
> ----------
>
>
> >Need to edit
> >~/.bash_profile (for the user) or /etc/profile (for the system, my
> >preferred method) and add /usr/sbin into the obvious path statement
> >near the top. Neither will get it permanently assigned everywhere
> >until you logout and back in.
>
>
> "/usr/sbin" seems to be in the "path statement" on the system
> ...
>
> ------------
> # Path manipulation
> if [ `id -u` = 0 ] && ! echo $PATH | /bin/grep -q "/sbin" ; then
> PATH=/sbin:$PATH
> fi
>
> if [ `id -u` = 0 ] && ! echo $PATH | /bin/grep -q "/usr/sbin" ; then
> PATH=/usr/sbin:$PATH
> fi
>
> ------------
>
> ... So, I'm still confused.
>
> I log in as me (my user), then "su" (no dash) to root, when
> needed, BTW.
>
>
>
>
>
> Patrick Beart
>
The su command, by default, is not a login shell. It sets the
environment variables `HOME' and `SHELL' from the password entry for
USER, and if USER is not the super-user, sets `USER' and `LOGNAME' to
USER. See:
info su
So, if you login as USER, you get USER's $HOME and $SHELL and are in
that directory.
If you do:
$PATH
you will get the path in bash_profile for the USER.
If you then:
su root
you will still be in USER's directory as root, but still have USER's
$SHELL.
Do $PATH again............
Now do:
su - root
and look for the change in the directory in the <prompt>.
Do:
$PATH
and you will have $HOME and $SHELL for root.
(I think I got all that right..........)
The important point is that the '-' option in the su command runs the
login file for USER specified. Otherwise it stays as is.
Tom
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