#!/bin/ksh
# timeout - set timeout for a command
# Heiner Steven (heiner.steven@odn.de)

typeset default=5

function usage
{
   print -u2 "usage: timeout [ -nsecs ] command args ... (default timeout is ${default} second(s))"
}

case "$1" in
-[h?]|'') # help
   usage
   exit 0
   ;;
esac

case $# in
1)
   exec >/dev/null 2>&1
   sleep $1
   kill $PPID && kill -1 $PPID && kill -9 $PPID
   ;;
*)
   case "$1" in
   -[0-9]*)
      typeset -i timeout=${1#-}
      shift
      ;;
   esac

   $0 ${timeout:-5} &

   exec "$@"
esac

exit