Languages
[Edit]
EN

Bash - forward SIGTERM to child processes

3 points
Created by:
Root-ssh
175020

In this short article we would like to show how to run multiple programs as child of main script and forward TERM SIGNAL to them when occurs.

Quick solution:

#!/bin/bash

terminate() { 
    kill -TERM "$child_1" 2> /dev/null
    kill -TERM "$child_2" 2> /dev/null
}

trap terminate SIGTERM

/path/to/script_or_program_1 &
child_1=$!

/path/to/script_or_program_2 &
child_2=$!

wait "$child_1"
wait "$child_2"

Where:

  • terminate function is called when SIGTERM occurs,
  • & at the end of the /path/to/script_or_program_N runs script or program in background, letting to get run process PID using $!,
  • kill -TERM forwards SIGTERM into child process,
  • wait blocks current script during process is run.

 

Alternative titles

  1. Bash - send ctrl+c to child precesses
Donate to Dirask
Our content is created by volunteers - like Wikipedia. If you think, the things we do are good, donate us. Thanks!
Join to our subscribers to be up to date with content, news and offers.

Bash

Bash - forward SIGTERM to child processes
Native Advertising
🚀
Get your tech brand or product in front of software developers.
For more information Contact us
Dirask - we help you to
solve coding problems.
Ask question.

❤️💻 🙂

Join