Handling Background tasks in UNIX

Abhiram Mullapudi

April 11, 2022

Launching a background task

  1. Create a shell script that monitors the task that is running and restarts it if it dies.
until <python python_scipt.py>; do
    echo "script died with error #?. Restarting it" >&2
    sleep 1
  1. Launch it with nohup
nohup <path to your shell script> &

How to kill a running background task

  1. Determine the PID of running job
ps -aux | grep <script name>

This should return the PID associated with the script running in the system.

  1. Kill the job
kill -9 <PID of the job to kill>