Add back rudely removed and popular -X option.
#!/usr/bin/env bash
#
# $Id$
# Author: Markus Wenzel, TU Muenchen
#
# showtime - print time.
TIME="$1"
SECS=$[ $TIME % 60 ]
[ $SECS -lt 10 ] && SECS="0$SECS"
MINUTES=$[ ($TIME / 60) % 60 ]
[ $MINUTES -lt 10 ] && MINUTES="0$MINUTES"
HOURS=$[ $TIME / 3600 ]
echo "${HOURS}:${MINUTES}:${SECS}"