====== Init.d skripty ======
  * v /etc/init.d/ jsou ulozeny skripty, ktere spousti sluzby po startu pocitace
  * v /etc/rcX.d/ jsou symbolicke odkazy na skripty, ktere se maji spustit/ukoncit v run level X
  * v kazdem rcX.d by mel byt symlink bud na spusteni S nebo na ukonceni K
  * pro zjednoduseni prace a udrzeni konzistence existuji ruzne nastroje

===== skripty =====

  * zakladni kostra init.d skriptu muze byt nasledujici (bez dalsich zavislosti)
<code>
do_stop() {
        echo "Killing service"
        ...
}

do_start() {
        echo "Starting service"
        ...
}

case "$1" in
        start)
                do_start
        ;;
        stop)
                do_stop
        ;;
        restart)
                do_stop
                do_start
        ;;
        *)
                echo "Usage: $0 {start|stop|restart}"
                exit 1
        ;;
esac
</code>

  * skripty by mely obsahovat hlavicku [[https://wiki.debian.org/LSBInitScripts|LSB]] (vyzaduje sysv-rc balicek)

<code>
### BEGIN INIT INFO
# Provides:          scriptname
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start daemon at boot time
# Description:       Enable service provided by daemon.
### END INIT INFO
</code>

===== Debian =====

  * prvnim nastrojem je update-rc.d

<code>
usage: update-rc.d [-n] [-f] <basename> remove
       update-rc.d [-n] <basename> defaults [NN | SS KK]
       update-rc.d [-n] <basename> disable|enable [S|2|3|4|5]
                -n: not really
                -f: force

The disable|enable API is not stable and might change in the future.
</code>

  * napriklad vypnuti sluzby http se udelat takto
<code>
update-rc.d apache2 disable
</code>

===== CentOS =====
  * chkconfig