I want to execute script before I shutdown my machine that writes date to a file (so I do know what time I finish working).
How to do it?
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What you are looking for is an init script: take a look at the Upstart How to.
You basically need to place your script in
/etc/init.d and create a link in
"?" is the runlevel you want to execute it.
The name of the link determines the order and when (start or shutdown) it's executed.
Links beginning with
K are run on shutdown, beginning with
S on startup. You should put the shutdown scripts in
/etc/rc0.d/, and the startup scripts in
/etc/rc2.d/. Restart scripts should be placed in
You could also execute a script when X ends or gnome logs you out, but I think init scripts are the cleanest solutions.
If going with the first option Debian based systems like Ubuntu provide the command line tool
update-rc.d to assist with installing