Signal handling in bash scipts
==============================

Public domain
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    #!/bin/bash
    # This example comes from: http://www.linuxquestions.org/questions/programming-9/signal-handling-from-bash-257157/
    
    on_die()
    {
        # print message
        #
        echo "Dying..."
    
        # Need to exit the script explicitly when done.
        # Otherwise the script would live on, until system
        # realy goes down, and KILL signals are send.
        #
        exit 0
    }
    
    
    # Execute function on_die() receiving TERM signal
    #
    trap 'on_die' TERM
    
    # Loop forever, reporting life each second
    #
    SEC=0
    while true ; do
        sleep 1
        SEC=$((SEC+1))
        echo "I'm PID# $$, and I'm alive for $SEC seconds now!"
    done
    
    # We never get here.
    exit 0

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_BY: Pejman Moghadam_  
_TAG: bash-script, bash, trap_  
_DATE: 2011-09-04 15:26:14_