How to execute a script when xfce session ends

开发者_Go百科Is it possible to run a script/command when the xfce session stops ?

See http://mail.xfce.org/pipermail/xfce/2012-November/031694.html - There, Erik Habicht suggested creating a wrapper script in /usr/local/bin/xfce4-session (or another dir that precedes the dir where xfce4-session is installed, /usr/bin in your PATH). This way, you do not have to change /usr/bin/X11/xfce4-session, so it can be updated independently.

#!/bin/bash
# Add your own pre-session logic here
/usr/bin/xfce4-session
# Add your own logout logic here

then

$ chmod +x /usr/local/bin/xfce4-session

It's not perfect (depends on PATH order) but may be more palatable.

(Note: I promoted my comment to an answer.)

Change the /usr/bin/xfce4-session executable with a shell script which runs the original xfce4-session and your logout script if xfce4-session finished.

# mv /usr/bin/xfce4-session /usr/bin/xfce4-session.orig

The new /usr/bin/xfce4-session file:

#!/bin/bash
/usr/bin/xfce4-session.orig
echo "my logout script" > /tmp/testfile

Don't forget to set the execute permissions:

# chmod a+x /usr/bin/xfce4-session

(Tested on Debian Squeeze.)

I'd prefer solution that does not touch system directories or files and will run the logout hook within current user session and its privilledges.

below is my solution:

create ~/.local/bin/xfce4-session-logout script with the following contents:

#!/bin/bash
PRELOGOUT=${HOME}/scripts/pre-logout.sh

RESULT=RES_`echo -e "logout\nrestart\nshutdown\nsuspend" | zenity --height=250 --list --title "Logout from $USER" --column "What do You want to do?"`
case $RESULT in
    RES_logout)
        [ -x  $PRELOGOUT] && $PRELOGOUT
        /usr/bin/xfce4-session-logout --fast --logout
        ;;
    RES_restart)
        [ -x  $PRELOGOUT] && $PRELOGOUT
        /usr/bin/xfce4-session-logout --fast --reboot
        ;;
    RES_shutdown)
        [ -x  $PRELOGOUT] && $PRELOGOUT
        /usr/bin/xfce4-session-logout --fast --halt
        ;;
    RES_suspend)
        /usr/bin/xfce4-session-logout --suspend
        ;;
    *)
       exit 1
       ;;
esac

and make it executable:

chmod u+x ~/.local/bin/xfce4-session-logout

Now, put whatever You need to be executed at logout action to ~/scripts/pre-logout.sh and make it executable

chmod u+x ~/scripts/pre-logout.sh

after relogin, either menu > logout button or Alt+f3: "logout" will bring simple dialog for leaving the current session

Note: pressing Alt+F4 does not work with it, but maybe some black belted xfce4 users will provide some suggestion

I validated the answer above since it does not involve new code writing. I however found another way to proceed : create a X11 program which would be launched at session startup : it could execute custom scripts when the X session is closed

Note : the drawback is that the used scripts could not connect to X windows so this solution may, depending on the need, execute the script too late.