Closing a script started from a console

Fixit7 · 05-02-2016, 05:10 PM

Quote:

Originally Posted by Habitual

console vs terminal emulator.

Stopping a script from either is trivial.
The use of correct terminology/nomenclature shouldn't be.

Drinking water is trivial.

Stopping a script running in a console AND closing that console is not.

So far, my method is the only one that has worked.

Turbocapitalist · 05-03-2016, 07:03 AM

Closing a session in either a console or a terminal really is trivial. urxvt is a terminal (short for terminal emulator). I have urxvt here and can't figure out any combination yet that prevents me from closing the terminal window using the advice I gave above and repeat here:

Code:

./some/script && exit

Something about your arrangement is more complex or different than is coming through in the posts. How, specifically, are you launching your script?

Fixit7 · 05-03-2016, 09:36 AM

I open a urxvt console and then run this.

Code:

#!/bin/bash 
#
#     Help from "Grasshopper" :-)
#
# Convert mp4 to mp3
#

for vid in *.mp4; do ffmpeg -i "$vid" "${vid%.mp4}.mp3"; done
rm *.mp4
gxmessage -timeout 2 "Conversion from mp4 to mp3 complete !!"
kill $(pgrep urxvt)

Turbocapitalist · 05-03-2016, 12:45 PM

Oh. If you are trying to kill the parent process, the you can point "kill" at the environment variable $PPID. That variable gets automatically filled in with the process id of the parent process. In the case of your script, that would be the shell which has called it. And then the terminal will go away after the shell hangs up. So try it this way:

Code:

#!/bin/bash 
#
#     Help from "Grasshopper" :-)
#
# Convert mp4 to mp3
# 

for vid in *.mp4; do ffmpeg -i "$vid" "${vid%.mp4}.mp3"; done
rm *.mp4
gxmessage -timeout 2 "Conversion from mp4 to mp3 complete !!"
kill -s HUP $PPID

HUP is the hangup signal and -s tells "kill" to send the hangup signal to the parent process id as specified by $PPID. You can read more about signals in the manual page: man 7 signal.

But if you are running the script ./this, then you can tell it to quit "urxvt" with exit.

Code:

./this && exit

Fixit7 · 05-03-2016, 03:36 PM

Thanks a lot and it does not close other open console windows.