11a1589223
Files which are installed as-is (any .service and other unit files, .conf files, .policy files, etc), are left as is. My assumption is that SPDX identifiers are not yet that well known, so it's better to retain the extended header to avoid any doubt. I also kept any copyright lines. We can probably remove them, but it'd nice to obtain explicit acks from all involved authors before doing that.
174 lines
6.2 KiB
XML
174 lines
6.2 KiB
XML
<?xml version='1.0'?> <!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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SPDX-License-Identifier: LGPL-2.1+
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This file is part of systemd.
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Copyright 2014 Lennart Poettering
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-->
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<refentry id="systemd-escape"
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>systemd-escape</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Lennart</firstname>
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<surname>Poettering</surname>
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<email>lennart@poettering.net</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd-escape</refentrytitle>
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<manvolnum>1</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-escape</refname>
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<refpurpose>Escape strings for usage in systemd unit names</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>systemd-escape</command>
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<arg choice="opt" rep="repeat">OPTIONS</arg>
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<arg choice="opt" rep="repeat">STRING</arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><command>systemd-escape</command> may be used to escape
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strings for inclusion in systemd unit names. The command may be
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used to escape and to undo escaping of strings.</para>
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<para>The command takes any number of strings on the command line,
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and will process them individually, one after another. It will
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output them separated by spaces to stdout.</para>
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<para>By default, this command will escape the strings passed,
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unless <option>--unescape</option> is passed which results in the
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inverse operation being applied. If <option>--mangle</option> is given, a
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special mode of escaping is applied instead, which assumes the
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string is already escaped but will escape everything that
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appears obviously non-escaped.</para>
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<para>For details on the escaping and unescaping algorithms see the relevant section in
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<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para>
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</refsect1>
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<refsect1>
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<title>Options</title>
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<para>The following options are understood:</para>
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<variablelist>
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<varlistentry>
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<term><option>--suffix=</option></term>
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<listitem><para>Appends the specified unit type suffix to the
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escaped string. Takes one of the unit types supported by
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systemd, such as <literal>service</literal> or
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<literal>mount</literal>. May not be used in conjunction with
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<option>--template=</option>, <option>--unescape</option> or
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<option>--mangle</option>.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--template=</option></term>
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<listitem><para>Inserts the escaped strings in a unit name
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template. Takes a unit name template such as
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<filename>foobar@.service</filename>. May not be used in
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conjunction with <option>--suffix=</option>,
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<option>--unescape</option> or
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<option>--mangle</option>.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--path</option></term>
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<term><option>-p</option></term>
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<listitem><para>When escaping or unescaping a string, assume it refers to a file system path. This eliminates
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leading, trailing or duplicate <literal>/</literal> characters and rejects <literal>.</literal> and
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<literal>..</literal> path components. This is particularly useful for generating strings suitable for
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unescaping with the <literal>%f</literal> specifier in unit files, see
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<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--unescape</option></term>
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<listitem><para>Instead of escaping the specified strings,
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undo the escaping, reversing the operation. May not be used in
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conjunction with <option>--suffix=</option>,
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<option>--template=</option> or
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<option>--mangle</option>.</para></listitem>
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</varlistentry>
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<varlistentry>
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<term><option>--mangle</option></term>
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<listitem><para>Like <option>--escape</option>, but only
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escape characters that are obviously not escaped yet, and
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possibly automatically append an appropriate unit type suffix
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to the string. May not be used in conjunction with
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<option>--suffix=</option>, <option>--template=</option> or
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<option>--unescape</option>.</para></listitem>
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</varlistentry>
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<xi:include href="standard-options.xml" xpointer="help" />
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<xi:include href="standard-options.xml" xpointer="version" />
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Examples</title>
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<para>To escape a single string:</para>
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<programlisting>$ systemd-escape 'Hallöchen, Meister'
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Hall\xc3\xb6chen\x2c\x20Meister</programlisting>
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<para>To undo escaping on a single string:</para>
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<programlisting>$ systemd-escape -u 'Hall\xc3\xb6chen\x2c\x20Meister'
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Hallöchen, Meister</programlisting>
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<para>To generate the mount unit for a path:</para>
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<programlisting>$ systemd-escape -p --suffix=mount "/tmp//waldi/foobar/"
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tmp-waldi-foobar.mount</programlisting>
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<para>To generate instance names of three strings:</para>
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<programlisting>$ systemd-escape --template=systemd-nspawn@.service 'My Container 1' 'containerb' 'container/III'
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systemd-nspawn@My\x20Container\x201.service systemd-nspawn@containerb.service systemd-nspawn@container-III.service</programlisting>
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</refsect1>
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<refsect1>
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<title>Exit status</title>
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<para>On success, 0 is returned, a non-zero failure code
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otherwise.</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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