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authorDavid Kaspar [Dee'Kej] <dkaspar@redhat.com>2018-05-25 20:01:54 +0200
committerDee'Kej <deekej@linuxmail.org>2018-05-30 12:32:22 +0200
commita145ddda284570e57413e37f025c3657205e17d8 (patch)
treea371338da02e38d8745964f75239c8ee62cc459b /sysvinitfiles
parentdb1ca2fadd20d0a4fb5a0fe18adcd8c960db9cf3 (diff)
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Repository scheme updated to new layout
NOTE: This commit just moves files around, without actually fixing the Makefiles and specfile. See follow up commits which resolve this.
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-Writing System V init scripts for Red Hat Linux
-===============================================
-
-All System V init scripts are named /etc/rc.d/init.d/<servicename>
-where <servicename> is the name of the service. There must be no
-".init" suffix.
-
-This path will very likely be moved to /etc/init.d in the future.
-Once Red Hat Linux 7.0 is installed, you can access scripts as
-/etc/init.d/<servicename>, via symlinks.
-
-Sample Script
-=============
-
-#!/bin/bash
-#
-# /etc/rc.d/init.d/<servicename>
-#
-# <description of the *service*>
-# <any general comments about this init script>
-#
-# <tags -- see below for tag definitions. *Every line* from the top
-# of the file to the end of the tags section must begin with a #
-# character. After the tags section, there should be a blank line.
-# This keeps normal comments in the rest of the file from being
-# mistaken for tags, should they happen to fit the pattern.>
-
-# Source function library.
-. /etc/init.d/functions
-
-<define any local shell functions used by the code that follows>
-
-start() {
- echo -n "Starting <servicename>: "
- <start daemons, perhaps with the daemon function>
- touch /var/lock/subsys/<servicename>
- return <return code of starting daemon>
-}
-
-stop() {
- echo -n "Shutting down <servicename>: "
- <stop daemons, perhaps with the killproc function>
- rm -f /var/lock/subsys/<servicename>
- return <return code of stopping daemon>
-}
-
-case "$1" in
- start)
- start
- ;;
- stop)
- stop
- ;;
- status)
- <report the status of the daemons in free-form format,
- perhaps with the status function>
- ;;
- restart)
- stop
- start
- ;;
- reload)
- <cause the service configuration to be reread, either with
- kill -HUP or by restarting the daemons, in a manner similar
- to restart above>
- ;;
- condrestart)
- <Restarts the servce if it is already running. For example:>
- [ -f /var/lock/subsys/<service> ] && restart || :
- probe)
- <optional. If it exists, then it should determine whether
- or not the service needs to be restarted or reloaded (or
- whatever) in order to activate any changes in the configuration
- scripts. It should print out a list of commands to give to
- $0; see the description under the probe tag below.>
- ;;
- *)
- echo "Usage: <servicename> {start|stop|status|reload|restart[|probe]"
- exit 1
- ;;
-esac
-exit $?
-
-Notes:
-
-- The restart and reload functions may be (and commonly are)
- combined into one test, vis:
- restart|reload)
-- You are not prohibited from adding other commands; list all commands
- which you intend to be used interactively to the usage message.
-- Notice the change in that stop() and start() are now shell functions.
- This means that restart can be implemented as
- stop
- start
- instead of
- $0 stop
- $0 start
- This saves a few shell invocations.
-
-Functions in /etc/init.d/functions
-=======================================
-
-daemon [ --check <name> ] [ --user <username>]
- [+/-nicelevel] program [arguments] [&]
-
- Starts a daemon, if it is not already running. Does
- other useful things like keeping the daemon from dumping
- core if it terminates unexpectedly.
-
- --check <name>:
- Check that <name> is running, as opposed to simply the
- first argument passed to daemon().
- --user <username>:
- Run command as user <username>
-
-killproc program [signal]
-
- Sends a signal to the program; by default it sends a SIGTERM,
- and if the process doesn't die, it sends a SIGKILL a few
- seconds later.
-
- It also tries to remove the pidfile, if it finds one.
-
-pidofproc program
-
- Tries to find the pid of a program; checking likely pidfiles,
- and using the pidof program. Used mainly from within other
- functions in this file, but also available to scripts.
-
-status program
-
- Prints status information. Assumes that the program name is
- the same as the servicename.
-
-
-Tags
-====
-
-# chkconfig: <startlevellist> <startpriority> <endpriority>
-
- Required. <startlevellist> is a list of levels in which
- the service should be started by default. <startpriority>
- and <endpriority> are priority numbers. For example:
- # chkconfig: 2345 20 80
- Read 'man chkconfig' for more information.
-
- Unless there is a VERY GOOD, EXPLICIT reason to the
- contrary, the <endpriority> should be equal to
- 100 - <startpriority>
-
-# description: <multi-line description of service>
-
- Required. Several lines of description, continued with '\'
- characters. The initial comment and following whitespace
- on the following lines is ignored.
-
-# description[ln]: <multi-line description of service in the language \
-# ln, whatever that is>
-
- Optional. Should be the description translated into the
- specified language.
-
-# processname:
-
- Optional, multiple entries allowed. For each process name
- started by the script, there should be a processname entry.
- For example, the samba service starts two daemons:
- # processname: smdb
- # processname: nmdb
-
-# config:
-
- Optional, multiple entries allowed. For each static config
- file used by the daemon, use a single entry. For example:
- # config: /etc/httpd/conf/httpd.conf
- # config: /etc/httpd/conf/srm.conf
-
- Optionally, if the server will automatically reload the config
- file if it is changed, you can append the word "autoreload" to
- the line:
- # config: /etc/foobar.conf autoreload
-
-# pidfile:
-
- Optional, multiple entries allowed. Use just like the config
- entry, except that it points at pidfiles. It is assumed that
- the pidfiles are only updated at process creation time, and
- not later. The first line of this file should be the ASCII
- representation of the PID; a terminating newline is optional.
- Any lines other than the first line are not examined.
-
-# probe: true
-
- Optional, used IN PLACE of processname, config, and pidfile.
- If it exists, then a proper reload-if-necessary cycle may be
- achieved by running these commands:
-
- command=$(/etc/rc.d/init.d/SCRIPT probe)
- [ -n "$command" ] && /etc/rc.d/init.d/SCRIPT $command
-
- where SCRIPT is the name of the service's sysv init script.
-
- Scripts that need to do complex processing could, as an
- example, return "run /var/tmp/<servicename.probe.$$"
- and implement a "run" command which would execute the
- named script and then remove it.
-
- Note that the probe command should simply "exit 0" if nothing
- needs to be done to bring the service into sync with its
- configuration files.
-
-Copyright (c) 2000 Red Hat Software, Inc.