Code:
# Usage: shutdown [-akrhPHfFnc] [-t sec] time [warning message]
#
# -a: use /etc/shutdown.allow
# -k: don't really shutdown, only warn.
# -r: reboot after shutdown.
# -h: halt after shutdown.
# -P: halt action is to turn off power.
# -H: halt action is to just halt.
# -f: do a 'fast' reboot (skip fsck).
# -F: Force fsck on reboot.
# -n: do not go through "init" but go down real fast.
# -c: cancel a running shutdown.
# -t secs: delay between warning and kill signal.
#
# ** the "time" argument is mandatory! (try "now") **
#
Debian shutdown - can i still use "-t <seconds>" option?...