/sbin/runlevel
/etc/default/rcS
/etc/init.d/rc
/usr/bin/mesg
/usr/bin/utmpdump
/bin/mountpoint
/etc/init.d/rcS
/usr/bin/wall
/sbin/shutdown
/sbin/reboot
/sbin/halt
/usr/bin/lastb
/usr/bin/last
/sbin/poweroff
/sbin/telinit
/sbin/init.sysvinit
/sbin/killall5