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| | ==Introduction== | | ==Introduction== |
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| − | The [https://www.freebsd.org/cgi/man.cgi?query=rcorder&apropos=0&sektion=0&manpath=FreeBSD+12.1-RELEASE+and+Ports&arch=default&format=html ''rcorder''] utility is designed to print out a dependency ordering of a set of interdependent files. Typically it is used to find an execution sequence for a set of shell scripts in which certain files must be executed before others.
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| − | Each file passed to ''rcorder'' must be annotated with special lines (which look like comments to the shell) which indicate the dependencies the files have upon certain points in the sequence, known as "conditions",
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| − | and which indicate, for each file, which "conditions" may be expected to be filled by that file.
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| − | ==rc Script Ordering==
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| − | Each rc script identifies what resources it needs before it can start. The [https://www.freebsd.org/cgi/man.cgi?query=rcorder&apropos=0&sektion=0&manpath=FreeBSD+12.1-RELEASE+and+Ports&arch=default&format=html rcorder(8)] sorts all the scripts in '''/etc/[[Rc.d|rc.d]]''' and '''/usr/[[Local/etc/rc.d|local/etc/rc.d]]''' in to the order used at system boot. If your rc scripts have any ordering errors, those errors appear at the beginning of your [https://www.freebsd.org/cgi/man.cgi?query=rcorder&apropos=0&sektion=0&manpath=FreeBSD+12.1-RELEASE+and+Ports&arch=default&format=html rcorder(8)] output.
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| − | ==A Example rc Script==
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| − | {|class="wikitable" style="width:96.5%;background:#FFFFFF; border:2px solid #008000;text-align:left;padding: 10px"
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| − | ! scope="col" style="width: 100px;"|'''Lines'''
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| − | ! scope="col" style="width: 350px;"|'''Description'''
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| − | |#!/bin/sh||Indicates the interpreter /bin/sh
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| − | |#||
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| − | |# $FreeBSD$||
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| − | |#||
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| − | !colspan="2"|
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| − | |# PROVIDE: timed||PROVIDE tells the [https://www.freebsd.org/cgi/man.cgi?query=rcorder&apropos=0&sektion=0&manpath=FreeBSD+12.1-RELEASE+and+Ports&arch=default&format=html rcorder(8)] the name of the script: ''timed''.
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| − | |# REQUIRE: DAEMON||REQUIRE says which other scripts must run any time before the script ''timed''.
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| − | |# BEFORE: LOGIN||BEFORE says: ''timed'' must run before the LOGIN script.
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| − | |# KEYWORD: nojail shutdown||The KEYWORD command lets select only special sturtup scripts. The [https://www.freebsd.org/cgi/man.cgi?query=timed&apropos=0&sektion=0&manpath=FreeBSD+12.1-RELEASE+and+Ports&arch=default&format=html ''timed(8)''] script ''nojail'' and ''shutdown''. Jail don't run this script. This script runs at system shutdown.
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| − | !colspan="2"|
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| − | |. /etc/rc.subr||The ''/etc/rc.subr'' functions used by various rc scripts
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| − | !colspan="2"|
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| − | |name="timed"||Set the variable name.
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| − | |desc="Time server daemon"||description field, purpose of the script
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| − | |rcvar="timed_enable"||lists the rc.conf variable that toggles this script
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| − | |command="/usr/sbin/${name}"||The command identifies which command this script should run after all.
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| − | !colspan="2"|
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| − | |load_rc_config $name||load the the configuration for the service from '''/etc/[[Rc.conf|rc.conf]]'''
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| − | |-
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| − | |run_rc_command "$1"||run the command
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| − | |}
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| | [[Category:Sysutils]] | | [[Category:Sysutils]] |
