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I have the following bash compound command:

while true ; do slow-command-one ; slow-command-two ; slow-command-three ; done

What happens:

  • When I press CtrlC at any point, the entire command is aborted.

What I want to happen:

  • When I press CtrlC during execution of slow-command-two, slow-command-two should be aborted, and execution should continue with slow-command-three.
  • When I press CtrlC at any other time, the entire command should be aborted (as now).

How do I get this to happen?

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2  
Ctrl-C is SIGINT. –  Ignacio Vazquez-Abrams Nov 5 '10 at 11:03
    
Ta, have edited. –  dave4420 Nov 5 '10 at 11:09

1 Answer 1

up vote 5 down vote accepted

You can use trap command for that. Catch SIGINT with it and Ctrl+C does not hurt your command execution. Then reset trap to default settings.

This should work:

#!/bin/bash

while true; do
  slow-command-one;
  trap "echo Proceeding to command three" SIGINT;
  slow-command-two;
  trap - SIGINT;
  slow-command-three;
done
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