Miscellany

/etc/init.d/single

#! /bin/sh
### BEGIN INIT INFO
# Provides:          single
# Required-Start:    $local_fs killprocs
# Required-Stop:
# Default-Start:     1
# Default-Stop:
# Short-Description: executed by init(8) upon entering runlevel 1 (single).
### END INIT INFO

PATH=/sbin:/bin

. /lib/lsb/init-functions

do_start () {
        log_action_msg "Will now switch to single-user mode"
        exec init -t1 S
}

case "$1" in
  start)
        do_start
        ;;
  restart|reload|force-reload)
        echo "Error: argument '$1' not supported" >&2
        exit 3
        ;;
  stop)
        # No-op
        ;;
  *)
        echo "Usage: $0 start|stop" >&2
        exit 3
        ;;
esac