#!/bin/sh

xmessage=/usr/X11R6/bin/xmessage

RETVAL=0

if [ -x $xmessage ]; then
{
  export DISPLAY=:0
  export XAUTHORITY=/var/gdm/:0.Xauth
  $xmessage -timeout 15 -nearmouse -buttons Cancel:0,OK:1\
            -default Cancel "Power off computer?" >/dev/null 2>&1
  RETVAL=$?
}
else
{
  RETVAL=1
}
fi
[ $RETVAL != 0 ] && exec /sbin/poweroff

exit $RETVAL

#--