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man: add a note about $XDG_SEAT and $XDG_VTNR to pam_systemd(8)

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Issue #6499 requests that a mention that those varibles can be set in the
environment is added. But the man page already says that. There isn't much
detail, but a man page does not need to and in this case should not include
all the details. Instead a note is added that those vars can be derived from
$DISPLAY.

Closes #6499.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2018-03-23 13:15:19 +01:00
parent 8d5a4f27f5
commit 2230a2908b
1 changed files with 4 additions and 1 deletions
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man/pam_systemd.xml
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@ -255,8 +255,11 @@
for, if any. (Only applies to seats with a VT available, such
as <literal>seat0</literal>)</para></listitem>
</varlistentry>
</variablelist>
<para>If not set, <command>pam_systemd</command> will determine the
values for <varname>$XDG_SEAT</varname> and <varname>$XDG_VTNR</varname>
based on the <varname>$DISPLAY</varname> variable.</para>
</refsect1>
<refsect1>