Question

2

User script at logout

rated 0 times [ 2] [ 0] / answers: 1 / hits: 1296 / 3 Years ago, fri, august 27, 2021, 2:25:37

The problem: I'm sharing a directory with my wife. I've placed us both in a 'shared' group and the directory belongs to the 'shared' group as well. Whenever one of us creates a file, this file belongs to user:user, instead of user:shared...

The solution: I can do sudo chown, but my wife can't. So, I want to run a script when I logout of the session.

If I understand correctly, the startup scripts go in /etc/init.d/ and the runlevel scripts go /etc/rc0.d/ where 0 is the runlevel (0-6).

Questions:
Do the runlevel scripts execute only on exit/logout? Do these depend on the user, that is, I'd like to run it only for my user (not so important in this case, mind)? Which runlevel should I choose (my guess is 5)? Should I place the script somewhere else?

Also, I imagine that the script will be run by root, so there's no need for sudo within the script, is that correct?

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nquirewha

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2 Years ago

answered 3 Years ago overine · Accepted Answer

I believe you can use setgid bit?

From man 2 chmod:

S_ISGID (02000) set-group-ID (set process effective group ID
on execve(2); mandatory locking, as described in fcntl(2); take a
new file's group from parent directory, as described in chown(2) and
mkdir(2))

Runlevel scripts are executed only on runlevel changes.

See also this thread: https://superuser.com/questions/65460/create-a-logoff-script-task-for-linux