<?xml version='1.0'?> <!--*-nxml-*-->
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
- "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
-
-<!--
- This file is part of systemd.
-
- Copyright 2014 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
--->
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
+<!-- SPDX-License-Identifier: LGPL-2.1+ -->
<refentry id="systemd-escape"
- xmlns:xi="http://www.w3.org/2001/XInclude">
-
- <refentryinfo>
- <title>systemd-escape</title>
- <productname>systemd</productname>
-
- <authorgroup>
- <author>
- <contrib>Developer</contrib>
- <firstname>Lennart</firstname>
- <surname>Poettering</surname>
- <email>lennart@poettering.net</email>
- </author>
- </authorgroup>
- </refentryinfo>
-
- <refmeta>
- <refentrytitle>systemd-escape</refentrytitle>
- <manvolnum>1</manvolnum>
- </refmeta>
-
- <refnamediv>
- <refname>systemd-escape</refname>
- <refpurpose>Escape strings for usage in system unit names</refpurpose>
- </refnamediv>
-
- <refsynopsisdiv>
- <cmdsynopsis>
- <command>systemd-escape <arg choice="opt" rep="repeat">OPTIONS</arg> <arg choice="opt" rep="repeat">STRING</arg></command>
- </cmdsynopsis>
- </refsynopsisdiv>
-
- <refsect1>
- <title>Description</title>
-
- <para><command>systemd-escape</command> may be used to
- escape strings for inclusion in systemd unit
- names. The command may be used to escape and to undo
- escaping of strings.</para>
-
- <para>The command takes any number of strings on the
- command line, and will process them individually, one
- after the other. It will output them separated by
- spaces to stdout.</para>
-
- <para>By default this command will escape the strings
- passed, unless <option>--unescape</option> is passed
- which results in the inverse operation being
- applied. If <option>--mangle</option> a special mode
- of escaping is applied instead, which assumes a string
- to be already escaped but will escape everything that
- appears obviously non-escaped.</para>
- </refsect1>
-
- <refsect1>
- <title>Options</title>
-
- <para>The following options are understood:</para>
-
- <variablelist>
- <varlistentry>
- <term><option>--suffix=</option></term>
-
- <listitem><para>Appends the specified
- unit type suffix to the escaped
- string. Takes one of the unit types
- supported by systemd, such as
- <literal>.service</literal> or
- <literal>.mount</literal>. May not be
- used in conjunction with
- <option>--template=</option>,
- <option>--unescape</option> or
- <option>--mangle</option>.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--template=</option></term>
-
- <listitem><para>Inserts the escaped
- strings in a unit name template. Takes
- a unit name template such as
- <filename>foobar@.service</filename>
- May not be used in conjunction with
- <option>--suffix=</option>,
- <option>--unescape</option> or
- <option>--mangle</option>.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--path</option></term>
- <term><option>-p</option></term>
-
- <listitem><para>When escaping or
- unescaping a string, assume it refers
- to a file system path. This enables
- special processing of the initial
- <literal>/</literal> of the
- path.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--unescape</option></term>
-
- <listitem><para>Instead of escaping
- the specified strings, undo the
- escaping, reversing the operation. May
- not be used in conjunction with
- <option>--suffix=</option>,
- <option>--template=</option> or
- <option>--mangle</option>.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--mangle</option></term>
-
- <listitem><para>Like
- <option>--escape</option>, but only
- escape characters that are obviously
- not escaped yet, and possibly
- automatically append an appropriate
- unit type suffix to the string. May
- not be used in conjunction with
- <option>--suffix=</option>,
- <option>--template=</option> or
- <option>--unescape</option>.</para></listitem>
- </varlistentry>
-
- <xi:include href="standard-options.xml" xpointer="help" />
- <xi:include href="standard-options.xml" xpointer="version" />
- </variablelist>
-
- </refsect1>
-
- <refsect1>
- <title>Examples</title>
-
- <para>Escape a single string:</para>
- <programlisting>$ systemd-escape 'Hallöchen, Meister'
+ xmlns:xi="http://www.w3.org/2001/XInclude">
+
+ <refentryinfo>
+ <title>systemd-escape</title>
+ <productname>systemd</productname>
+ </refentryinfo>
+
+ <refmeta>
+ <refentrytitle>systemd-escape</refentrytitle>
+ <manvolnum>1</manvolnum>
+ </refmeta>
+
+ <refnamediv>
+ <refname>systemd-escape</refname>
+ <refpurpose>Escape strings for usage in systemd unit names</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <cmdsynopsis>
+ <command>systemd-escape</command>
+ <arg choice="opt" rep="repeat">OPTIONS</arg>
+ <arg choice="opt" rep="repeat">STRING</arg>
+ </cmdsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para><command>systemd-escape</command> may be used to escape
+ strings for inclusion in systemd unit names. The command may be
+ used to escape and to undo escaping of strings.</para>
+
+ <para>The command takes any number of strings on the command line,
+ and will process them individually, one after another. It will
+ output them separated by spaces to stdout.</para>
+
+ <para>By default, this command will escape the strings passed,
+ unless <option>--unescape</option> is passed which results in the
+ inverse operation being applied. If <option>--mangle</option> is given, a
+ special mode of escaping is applied instead, which assumes the
+ string is already escaped but will escape everything that
+ appears obviously non-escaped.</para>
+
+ <para>For details on the escaping and unescaping algorithms see the relevant section in
+ <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>Options</title>
+
+ <para>The following options are understood:</para>
+
+ <variablelist>
+ <varlistentry>
+ <term><option>--suffix=</option></term>
+
+ <listitem><para>Appends the specified unit type suffix to the
+ escaped string. Takes one of the unit types supported by
+ systemd, such as <literal>service</literal> or
+ <literal>mount</literal>. May not be used in conjunction with
+ <option>--template=</option>, <option>--unescape</option> or
+ <option>--mangle</option>.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>--template=</option></term>
+
+ <listitem><para>Inserts the escaped strings in a unit name
+ template. Takes a unit name template such as
+ <filename>foobar@.service</filename>. With
+ <option>--unescape</option>, expects instantiated unit names
+ for this template and extracts and unescapes just the instance
+ part. May not be used in conjunction with
+ <option>--suffix=</option>,
+ <option>--instance</option> or
+ <option>--mangle</option>.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>--path</option></term>
+ <term><option>-p</option></term>
+
+ <listitem><para>When escaping or unescaping a string, assume it refers to a file system path. This eliminates
+ leading, trailing or duplicate <literal>/</literal> characters and rejects <literal>.</literal> and
+ <literal>..</literal> path components. This is particularly useful for generating strings suitable for
+ unescaping with the <literal>%f</literal> specifier in unit files, see
+ <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
+ </para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>--unescape</option></term>
+ <term><option>-u</option></term>
+
+ <listitem><para>Instead of escaping the specified strings,
+ undo the escaping, reversing the operation. May not be used in
+ conjunction with <option>--suffix=</option> or
+ <option>--mangle</option>.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>--mangle</option></term>
+ <term><option>-m</option></term>
+
+ <listitem><para>Like <option>--escape</option>, but only
+ escape characters that are obviously not escaped yet, and
+ possibly automatically append an appropriate unit type suffix
+ to the string. May not be used in conjunction with
+ <option>--suffix=</option>, <option>--template=</option> or
+ <option>--unescape</option>.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>--instance</option></term>
+
+ <listitem><para>With <option>--unescape</option>, unescape
+ and print only the instance part of an instantiated unit name
+ template. Results in an error for an uninstantiated template
+ like <filename>ssh@.service</filename> or a non-template name
+ like <filename>ssh.service</filename>.
+ Must be used in conjunction with <option>--unescape</option>
+ and may not be used in conjunction with
+ <option>--template</option>.</para></listitem>
+ </varlistentry>
+
+ <xi:include href="standard-options.xml" xpointer="help" />
+ <xi:include href="standard-options.xml" xpointer="version" />
+ </variablelist>
+
+ </refsect1>
+
+ <refsect1>
+ <title>Examples</title>
+
+ <para>To escape a single string:</para>
+ <programlisting>$ systemd-escape 'Hallöchen, Meister'
Hall\xc3\xb6chen\x2c\x20Meister</programlisting>
-
<para>To undo escaping on a single string:</para>
-
<programlisting>$ systemd-escape -u 'Hall\xc3\xb6chen\x2c\x20Meister'
+ <para>To undo escaping on a single string:</para>
+ <programlisting>$ systemd-escape -u 'Hall\xc3\xb6chen\x2c\x20Meister'
Hallöchen, Meister</programlisting>
-
<para>To generate the mount unit for a path:</para>
-
<programlisting>$ systemd-escape -p --suffix=mount "/tmp//waldi/foobar/"
+ <para>To generate the mount unit for a path:</para>
+ <programlisting>$ systemd-escape -p --suffix=mount "/tmp//waldi/foobar/"
tmp-waldi-foobar.mount</programlisting>
- <para>To generate instance names of three strings</para>
-
<programlisting>$ systemd-escape --template=systemd-nspawn@.service 'My Container 1' 'containerb' 'container/III'
+ <para>To generate instance names of three strings:</para>
+ <programlisting>$ systemd-escape --template=systemd-nspawn@.service 'My Container 1' 'containerb' 'container/III'
systemd-nspawn@My\x20Container\x201.service systemd-nspawn@containerb.service systemd-nspawn@container-III.service</programlisting>
- </refsect1>
-
- <refsect1>
- <title>Exit status</title>
-
- <para>On success, 0 is returned, a non-zero failure
- code otherwise.</para>
- </refsect1>
-
- <refsect1>
- <title>See Also</title>
- <para>
- <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
- <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
- </para>
- </refsect1>
+
+ <para>To extract the instance part of an instantiated unit:</para>
+ <programlisting>$ systemd-escape -u --instance 'systemd-nspawn@My\x20Container\x201.service'
+My Container 1</programlisting>
+
+ <para>To extract the instance part of an instance of a particular template:</para>
+ <programlisting>$ systemd-escape -u --template=systemd-nspawn@.service 'systemd-nspawn@My\x20Container\x201.service'
+My Container 1</programlisting>
+ </refsect1>
+
+ <refsect1>
+ <title>Exit status</title>
+
+ <para>On success, 0 is returned, a non-zero failure code
+ otherwise.</para>
+ </refsect1>
+
+ <refsect1>
+ <title>See Also</title>
+ <para>
+ <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
+ <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+ </para>
+ </refsect1>
</refentry>
projects / thirdparty / systemd.git / blobdiff