#!/bin/ksh

trap huphandler  HUP
trap ''          QUIT
trap exithandler TERM INT

huphandler()
{
   print 'Received SIGHUP'
}

exithandler()
{
   print 'Received SIGTERM or SIGINT'
   exit 1
}
## Execution starts here - infinite loop until interrupted
while true; do
   sleep 5
   print -n "$SECONDS "
done