where can I insert a autorun script when the gnome logout

[curtis123]

gnome logout will return to gdm

but it does not run my script --> ~/.bash.logout

where can i insert my post shellscript which will autorun after the gnomesession logout

[ecatmur]

There doesn't seem to be a good way to do this, at least not officially gnome-sanctioned.
AIUI the best thing to do is to create a ~/.xsession with:

[curtis123]

thanks for ecatmur's reply

but the main purpose in my logout script ~/.bash_logout is try to unmount a device which mounted as $HOME (for example /home/user1)

I should umount it after the user logout.

the following is main content of ~/.bash_logout

[ecatmur]

Indeed, and the foremost among those processes is the script itself (it's ~/.xsession!)

If you want to do administrative tasks i.e. stuff as root after a session ends then the place to put these tasks is /etc/X11/gdm/PostSession/Default which is run as root after a user logs out.
In there you could put e.g.

[curtis123]

thanks, first execute fuser -k -m . now it works well