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systemd/man/systemd-escape.xml
Tom Gundersen 12b42c7667 man: revert dynamic paths for split-usr setups
This did not really work out as we had hoped. Trying to do this upstream
introduced several problems that probably makes it better suited as a
downstream patch after all. At any rate, it is not releaseable in the
current state, so we at least need to revert this before the release.

 * by adjusting the path to binaries, but not do the same thing to the
   search path we end up with inconsistent man-pages. Adjusting the search
   path too would be quite messy, and it is not at all obvious that this is
   worth the effort, but at any rate it would have to be done before we
   could ship this.

 * this means that distributed man-pages does not make sense as they depend
   on config options, and for better or worse we are still distributing
   man pages, so that is something that definitely needs sorting out before
   we could ship with this patch.

 * we have long held that split-usr is only minimally supported in order
   to boot, and something we hope will eventually go away. So before we start
   adding even more magic/effort in order to make this work nicely, we should
   probably question if it makes sense at all.
2015-06-18 19:47:44 +02:00

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<?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">
<!--
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You should have received a copy of the GNU Lesser General Public License
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<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</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 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'
Hall\xc3\xb6chen\x2c\x20Meister</programlisting>
<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/"
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'
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>
</refentry>