Quit bash background jobs when script is killed

Asked Dec 10 '15 at 00:14

Active Dec 10 '15 at 00:54

Viewed 94 times

I have a script that looks like this:

#!/bin/bash

trap 'kill $(jobs -pr) && exit' SIGINT

# Run script 10 times in the background
for i in `seq 1 10`;
do
    python script.py &
    sleep .05
done
# Wait for result from program
sleep 5

# Cleanup scripts
kill $(jobs -p)

The python script is basically a stress test for a different program, and I want 10 of them running at the same time. They stay that way for 5 seconds so I can observe what happens and then they all get killed.

The problem is, if I CTRL+C out of running the script before it's complete, the background python jobs hang around and keep going. I want them all to exit when this script exits, whether it exits normally or is killed. I searched around but didn't find much.

I have tried the solutions posted in this answer, but at least for me, $(jobs -p) returns no processes when called from the trap so none of those solutions work. Edited to include trap code.

edited May 23 '17 at 12:33

Community

asked Dec 10 '15 at 00:14

bobroxsox

2

trap SIGINT and kill as you are already doing – Alex Dec 10 '15 at 00:19
I did try to trap EXIT and SIGNINT, the problem is for some reason ```jobs -p``` returns nothing when run from the trap. So none of the processes get killed. – bobroxsox Dec 10 '15 at 00:29
I did see that question, but those answers did not kill my background processes. – bobroxsox Dec 10 '15 at 00:44
Try killing the entire process group. `trap 'kill -SIGTERM 0' EXIT` – user513951 Dec 10 '15 at 01:00

Quit bash background jobs when script is killed

0 Answers0