Exit from while loop after catching signal

Question

I'm writing a bash script to capture a signal from another program:

trap "echo Signal" SIGUSR1 
while :         
do
        sleep 1 
done
COMMAND 1
COMMAND 2
COMMAND 3
.........

I want to exit from the while loop after catching the signal, in order to launch COMMAND 1,2,3 and so on.

Any suggestions, please?

Answer 1

Put your commands in a function and then use the function in your trap:

#!/bin/bash
trap 'trp' SIGUSR1
trp() {
        COMMAND 1
        COMMAND 2
        COMMAND 3
        ......... 
}
while :         
do
    sleep 1        
done