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whitenoisedb
Asked: 2014-09-16 16:53:19 +0800 CST

Can't trap (Ctrl^C) in my bash script

  • 772

I don't know why I can't trap Ctrl^C in this simple script.

#!/bin/bash

for number in $(seq 10); do
  echo -n "."
  sleep 2
done

function finish() {
  echo "bye."
}

trap finish SIGINT

I've tried using INT instead of SIGINT, without success.

bash

1 Answers

  1. Best Answer

    Answer inspired by edit to OP. Please don't kill me...

    Order in scripting is pretty important. First off, you need to put the function first. You also need to put the trap before the loop. Something like this should work well:

    #!/bin/bash

function finish() {
        echo "bye bye!"
}

trap finish SIGINT

for number in $(seq 10); do
        echo "TODO: Insert work here..."
        # Insert work to do here.
done
    • 10