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Re: gdm does not execute PreSession PostSession scripts



On Fri, Oct 3, 2008 at 1:45 PM, Paul Johnson <pauljohn32 gmail com> wrote:
> I'm wondering if this is a widely experienced problem.  I've found one
> report about it in the Fedora bugzilla.
>
> I've noticed that the customized gdm PreSession/Default and
> PostSession/Default scripts that I've been using for years in Fedora
> 1-8 no longer run on a system that recently upgraded to Fedora 9.
> There have been many changes in Fedora's gdm this time, no more
> gdmsetup program and such, but as far as I can see in the
> documentation, the scripts are supposed to run still, but they don't.
>
> This bug report says that the /etc/gdm/PostSession default is not executed
>
> https://bugzilla.redhat.com/show_bug.cgi?id=449675
>
> THat's probably same as this one;
>
> https://bugzilla.redhat.com/show_bug.cgi?id=453483
>
> It appears to me that neither PreSession nor PostSession is executed.
>
> You can see for yourself if you put something simple in PreSession/Default like
>
> echo "whatever" >> /tmp/checkingOnGDM
>
> It simply appears as if GDM is by passing the scripts altogether.
>
> It is important to me to know if we are just a few isolated people for
> whom this does not work. I mean, does it work for nobody, but most
> people don't try?  Or does it work for some people?
>
> There are so many changes in the gdm used in F9 and the documentation
> has not caught up with it, I think.
>
> Assuming gdm is broken, can you suggest an alternative way to run a
> script every time users log in and log out?
>
> --
> Paul E. Johnson
> Professor, Political Science
> 1541 Lilac Lane, Room 504
> University of Kansas
>
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Hi Paul Johnson!

If it was me I would be looking at the ownership, permissions, and
SELinux context of the scripts.   But that is me.

I cannot answer your question about the scripts - my path to my Fedora
is blocked by a nasty boot file compatability issue, I think.  I have
been experimenting with other OSs and just found out.

Probably the best place to locate a script for a specific person
logging in or out may well be in thier home directory as mentioned in
the segment of the wikipedia artical on Bash which I found at
http://en.wikipedia.org/wiki/Bash (remember, all processes are spawned
in shells):
---------------------------------------------------------------------
Startup scripts
When Bash starts, it executes the commands in a variety of different scripts.

When Bash is invoked as an interactive login shell, it first reads and
executes commands from the file /etc/profile, if that file exists.
After reading that file, it looks for ~/.bash_profile, ~/.bash_login,
and ~/.profile, in that order, and reads and executes commands from
the first one that exists and is readable.

When a login shell exits, Bash reads and executes commands from the
file ~/.bash_logout, if it exists.

When an interactive shell that is not a login shell is started, Bash
reads and executes commands from ~/.bashrc, if that file exists. This
may be inhibited by using the --norc option. The --rcfile file option
will force Bash to read and execute commands from file instead of
~/.bashrc.
--------------------------------------------------------------------

If you need a more general solution you might add the script to
/etc/rc.local.  An introduction to this process is at
http://www.linux.com/articles/114107 .

Have Fun!

Tod


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