#!/bin/ksh -p
XLOCK=xlock

findxlock() {
    ps -fu $USER | awk '/'$XLOCK'/{print $8}' | grep -c "$XLOCK"
}

findps_sleep() {
    ps -fu $USER | awk '/sleep '$1'/{printf $2" "}'
}

time=10
if [[ "$1" != "" ]] ; then
    time=$1
fi

secs=$((time * 60))

(
  (
    sleep 1; 
    
    if (( $( findxlock ) == 1 )) ; then
      echo kill -9 -1 ;
    fi
  ) &

  $XLOCK -r -info \
  "Locked at: $(date '+%R') - Machine will reboot in $time minutes."

   kill -9 $( findps_sleep $secs )

) 2> /dev/null