#!/bin/bash
#
# countdown [start_count]
#
# test program for timeout commands.
#
####
#
# Anthony Thyssen     10 December 2010
#

i=${1:-10}   # count to start counting down from

trap 'echo "Countdown Terminated!"; exit 1' 1 2 3 15

echo "Countdown continuing at T minus $i"
while [ $i -gt 0 ]; do
  sleep 1
  i=`expr $i - 1`

  # add a little fun...
  [ $i -eq 3 ] && echo "Main engine start" \
               || echo "--> $i"

done
echo "We have lift off!!!"
exit 0