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1 | <?xml version='1.0'?> <!--*-nxml-*--> |
2 | <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" | |
12b42c76 | 3 | "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"> |
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4 | |
5 | <!-- | |
6 | This file is part of systemd. | |
7 | ||
8 | Copyright 2014 Lennart Poettering | |
9 | ||
10 | systemd is free software; you can redistribute it and/or modify it | |
11 | under the terms of the GNU Lesser General Public License as published by | |
12 | the Free Software Foundation; either version 2.1 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | systemd is distributed in the hope that it will be useful, but | |
16 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | Lesser General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU Lesser General Public License | |
21 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
22 | --> | |
23 | ||
24 | <refentry id="systemd-escape" | |
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25 | xmlns:xi="http://www.w3.org/2001/XInclude"> |
26 | ||
27 | <refentryinfo> | |
28 | <title>systemd-escape</title> | |
29 | <productname>systemd</productname> | |
30 | ||
31 | <authorgroup> | |
32 | <author> | |
33 | <contrib>Developer</contrib> | |
34 | <firstname>Lennart</firstname> | |
35 | <surname>Poettering</surname> | |
36 | <email>lennart@poettering.net</email> | |
37 | </author> | |
38 | </authorgroup> | |
39 | </refentryinfo> | |
40 | ||
41 | <refmeta> | |
42 | <refentrytitle>systemd-escape</refentrytitle> | |
43 | <manvolnum>1</manvolnum> | |
44 | </refmeta> | |
45 | ||
46 | <refnamediv> | |
47 | <refname>systemd-escape</refname> | |
ab7e3ef5 | 48 | <refpurpose>Escape strings for usage in systemd unit names</refpurpose> |
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49 | </refnamediv> |
50 | ||
51 | <refsynopsisdiv> | |
52 | <cmdsynopsis> | |
53 | <command>systemd-escape</command> | |
54 | <arg choice="opt" rep="repeat">OPTIONS</arg> | |
55 | <arg choice="opt" rep="repeat">STRING</arg> | |
56 | </cmdsynopsis> | |
57 | </refsynopsisdiv> | |
58 | ||
59 | <refsect1> | |
60 | <title>Description</title> | |
61 | ||
62 | <para><command>systemd-escape</command> may be used to escape | |
63 | strings for inclusion in systemd unit names. The command may be | |
64 | used to escape and to undo escaping of strings.</para> | |
65 | ||
66 | <para>The command takes any number of strings on the command line, | |
cd72d204 | 67 | and will process them individually, one after another. It will |
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68 | output them separated by spaces to stdout.</para> |
69 | ||
b938cb90 | 70 | <para>By default, this command will escape the strings passed, |
798d3a52 | 71 | unless <option>--unescape</option> is passed which results in the |
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72 | inverse operation being applied. If <option>--mangle</option> is given, a |
73 | special mode of escaping is applied instead, which assumes the | |
74 | string is already escaped but will escape everything that | |
798d3a52 | 75 | appears obviously non-escaped.</para> |
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76 | |
77 | <para>For details on the escaping and unescaping algorithms see the relevant section in | |
78 | <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>.</para> | |
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79 | </refsect1> |
80 | ||
81 | <refsect1> | |
82 | <title>Options</title> | |
83 | ||
84 | <para>The following options are understood:</para> | |
85 | ||
86 | <variablelist> | |
87 | <varlistentry> | |
88 | <term><option>--suffix=</option></term> | |
89 | ||
90 | <listitem><para>Appends the specified unit type suffix to the | |
91 | escaped string. Takes one of the unit types supported by | |
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92 | systemd, such as <literal>service</literal> or |
93 | <literal>mount</literal>. May not be used in conjunction with | |
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94 | <option>--template=</option>, <option>--unescape</option> or |
95 | <option>--mangle</option>.</para></listitem> | |
96 | </varlistentry> | |
97 | ||
98 | <varlistentry> | |
99 | <term><option>--template=</option></term> | |
100 | ||
101 | <listitem><para>Inserts the escaped strings in a unit name | |
102 | template. Takes a unit name template such as | |
918737f3 | 103 | <filename>foobar@.service</filename>. May not be used in |
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104 | conjunction with <option>--suffix=</option>, |
105 | <option>--unescape</option> or | |
106 | <option>--mangle</option>.</para></listitem> | |
107 | </varlistentry> | |
108 | ||
109 | <varlistentry> | |
110 | <term><option>--path</option></term> | |
111 | <term><option>-p</option></term> | |
112 | ||
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113 | <listitem><para>When escaping or unescaping a string, assume it refers to a file system path. This eliminates |
114 | leading, trailing or duplicate <literal>/</literal> characters and rejects <literal>.</literal> and | |
115 | <literal>..</literal> path components. This is particularly useful for generating strings suitable for | |
116 | unescaping with the <literal>%f</literal> specifier in unit files, see | |
117 | <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>. | |
118 | </para></listitem> | |
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119 | </varlistentry> |
120 | ||
121 | <varlistentry> | |
122 | <term><option>--unescape</option></term> | |
123 | ||
124 | <listitem><para>Instead of escaping the specified strings, | |
125 | undo the escaping, reversing the operation. May not be used in | |
126 | conjunction with <option>--suffix=</option>, | |
127 | <option>--template=</option> or | |
128 | <option>--mangle</option>.</para></listitem> | |
129 | </varlistentry> | |
130 | ||
131 | <varlistentry> | |
132 | <term><option>--mangle</option></term> | |
133 | ||
134 | <listitem><para>Like <option>--escape</option>, but only | |
135 | escape characters that are obviously not escaped yet, and | |
136 | possibly automatically append an appropriate unit type suffix | |
137 | to the string. May not be used in conjunction with | |
138 | <option>--suffix=</option>, <option>--template=</option> or | |
139 | <option>--unescape</option>.</para></listitem> | |
140 | </varlistentry> | |
141 | ||
142 | <xi:include href="standard-options.xml" xpointer="help" /> | |
143 | <xi:include href="standard-options.xml" xpointer="version" /> | |
144 | </variablelist> | |
145 | ||
146 | </refsect1> | |
147 | ||
148 | <refsect1> | |
149 | <title>Examples</title> | |
150 | ||
8bb36a11 | 151 | <para>To escape a single string:</para> |
798d3a52 | 152 | <programlisting>$ systemd-escape 'Hallöchen, Meister' |
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153 | Hall\xc3\xb6chen\x2c\x20Meister</programlisting> |
154 | ||
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155 | <para>To undo escaping on a single string:</para> |
156 | <programlisting>$ systemd-escape -u 'Hall\xc3\xb6chen\x2c\x20Meister' | |
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157 | Hallöchen, Meister</programlisting> |
158 | ||
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159 | <para>To generate the mount unit for a path:</para> |
160 | <programlisting>$ systemd-escape -p --suffix=mount "/tmp//waldi/foobar/" | |
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161 | tmp-waldi-foobar.mount</programlisting> |
162 | ||
8bb36a11 | 163 | <para>To generate instance names of three strings:</para> |
798d3a52 | 164 | <programlisting>$ systemd-escape --template=systemd-nspawn@.service 'My Container 1' 'containerb' 'container/III' |
9869e759 | 165 | systemd-nspawn@My\x20Container\x201.service systemd-nspawn@containerb.service systemd-nspawn@container-III.service</programlisting> |
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166 | </refsect1> |
167 | ||
168 | <refsect1> | |
169 | <title>Exit status</title> | |
170 | ||
171 | <para>On success, 0 is returned, a non-zero failure code | |
172 | otherwise.</para> | |
173 | </refsect1> | |
174 | ||
175 | <refsect1> | |
176 | <title>See Also</title> | |
177 | <para> | |
178 | <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>, | |
2651d037 | 179 | <citerefentry><refentrytitle>systemd.unit</refentrytitle><manvolnum>5</manvolnum></citerefentry>, |
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180 | <citerefentry><refentrytitle>systemctl</refentrytitle><manvolnum>1</manvolnum></citerefentry> |
181 | </para> | |
182 | </refsect1> | |
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183 | |
184 | </refentry> |