Tricky problem, full detaching process inside a script.

Linux.tar.gz · 03-05-2011, 03:11 PM

Hi.

I want to change Xfce layout on-the-fly :

I created an install script.

If i launch it, it does not work.
If i execute it manually, it works like a charm.

I searched for days, but i now give up TT. That's why i request your help...

Code:

#!/bin/sh

/usr/bin/xfce4-panel -x

killall xfconfd

#the Xfce settings
cp -r /etc/xdg/xfce-custom-settings/* $HOME/.config/

setsid sh -c 'cd / && xfwm4 --replace ... & :' > /dev/null 2>&1 < /dev/null

sleep 4

setsid sh -c 'cd / && xfce4-panel& ... & :' > /dev/null 2>&1 < /dev/null

The only explanation i found is, as the script is launched under a xfwm4 instance, this instance is "memorized" all script long, so, as xfwm4 is relaunched, nothing happens.

Does someone has an idea about how to "isolate" this script from it's dependency ?

corp769 · 03-06-2011, 02:02 PM

With what you are doing, you should be able to use nohup or disown.

Cheers,

Josh

Linux.tar.gz · 03-06-2011, 02:13 PM

Yup, already tried that, with the same result.

I think i have to launch the process detached in another tty...

I don't know how.

corp769 · 03-06-2011, 02:29 PM

Hmmm.... You are talking about isolating the "setsid sh -c..." correct?

Nominal Animal · 03-06-2011, 04:19 PM

Use a subshell to isolate it from the job list on the current shell, then use setsid and ampersand to run it on the background (in parallel to the original script) in a separate session.

Code:

( setsid sh -c ' ... commands ... ' </dev/null >/dev/null 2>/dev/null & )