Trapping ctrl-c in Bash

You can use the trap builtin to handle a user pressing ctrl-c during the execution of a Bash script. e.g. if you need to perform some cleanup functions.

#!/bin/bash

# trap ctrl-c and call ctrl_c()
trap ctrl_c INT

function ctrl_c() {
        echo "** Trapped CTRL-C"
}

for i in `seq 1 5`; do
    sleep 1
    echo -n "."
done