Control – Marius van Witzenburg

How to trap or catch Keyboard Interrupt in Bash

By mariusvw

May 18, 2010

Sometimes you want to clean up some things when your script gets stopped for whatever reason. This script captures the SIGINT signal and sends it to the myExit function. The myExit function calls another function (just to show what is possible) which removes a logfile.

#!/bin/bash
 
myCleanup() {
  rm -f /myapp/tmp/mylog
  return $?
}
 
myExit() {
  echo -en "n*** Exiting ***n"
  myCleanup
  exit $?
}

trap myExit SIGINT
 
# main loop
while true
do
    echo -n "Enter your name: "
    read x
    echo "Hello $x"
done

#!/bin/bash

myCleanup() {

rm -f /myapp/tmp/mylog

return $?

}

myExit() {

echo -en "n*** Exiting ***n"

myCleanup

exit $?

}

trap myExit SIGINT

# main loop

while true

echo -n "Enter your name: "

read x

echo "Hello $x"

done

If you map the SIGINT signal to a function […]

Marius van Witzenburg

Tag: Control

How to control HAProxy using Ansible with Unix Socket Commands

How to trap or catch Keyboard Interrupt in Bash