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man: mention the exclamation mark and minus sign literally, to make things searchable

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I was looking for the explanation for the exclamation mark in the text,
and couldn't find it, searching for "!". Let's make this easier, and
indicate the character meant.
This commit is contained in:
Lennart Poettering 2020-05-10 11:44:53 +02:00
parent f1eb0ccd9e
commit f742f9d317
1 changed files with 8 additions and 12 deletions
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20
man/tmpfiles.d.xml
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@ -154,8 +154,8 @@ L /tmp/foobar - - - - /dev/null</programlisting>
<refsect2>
<title>Type</title>
<para>The type consists of a single letter and optionally an
exclamation mark and/or minus sign.</para>
<para>The type consists of a single letter and optionally an exclamation mark (<literal>!</literal>)
and/or minus sign (<literal>-</literal>).</para>
<para>The following line types are understood:</para>
@ -453,13 +453,10 @@ L /tmp/foobar - - - - /dev/null</programlisting>
</varlistentry>
</variablelist>
<para>If the exclamation mark is used, this line is only safe to
execute during boot, and can break a running system. Lines
without the exclamation mark are presumed to be safe to execute
at any time, e.g. on package upgrades.
<command>systemd-tmpfiles</command> will execute line with an
exclamation mark only if option <option>--boot</option> is
given.</para>
<para>If the exclamation mark (<literal>!</literal>) is used, this line is only safe to execute during
boot, and can break a running system. Lines without the exclamation mark are presumed to be safe to
execute at any time, e.g. on package upgrades. <command>systemd-tmpfiles</command> will take lines with
an exclamation mark only into consideration, if the <option>--boot</option> option is given.</para>
<para>For example:
<programlisting># Make sure these are created by default so that nobody else can
@ -471,9 +468,8 @@ r! /tmp/.X[0-9]*-lock</programlisting>
running system, and will only be executed with
<option>--boot</option>.</para>
<para>If the minus sign is used, this line failing to run
successfully during create (and only create) will not cause
the execution of <command>systemd-tmpfiles</command> to return
<para>If the minus sign (<literal>-</literal>) is used, this line failing to run successfully during
create (and only create) will not cause the execution of <command>systemd-tmpfiles</command> to return
an error.</para>
<para>For example: