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-rw-r--r--man/systemd.exec.xml27
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diff --git a/man/systemd.exec.xml b/man/systemd.exec.xml
index 6317830ae2..6dda6c5e69 100644
--- a/man/systemd.exec.xml
+++ b/man/systemd.exec.xml
@@ -332,6 +332,33 @@
</varlistentry>
<varlistentry>
+ <term><varname>PassEnvironment=</varname></term>
+
+ <listitem><para>Pass environment variables from the systemd system
+ manager to executed processes. Takes a space-separated list of variable
+ names. This option may be specified more than once, in which case all
+ listed variables will be set. If the empty string is assigned to this
+ option, the list of environment variables is reset, all prior
+ assignments have no effect. Variables that are not set in the system
+ manager will not be passed and will be silently ignored.</para>
+
+ <para>Variables passed from this setting are overridden by those passed
+ from <varname>Environment=</varname> or
+ <varname>EnvironmentFile=</varname>.</para>
+
+ <para>Example:
+ <programlisting>PassEnvironment=VAR1 VAR2 VAR3</programlisting>
+ passes three variables <literal>VAR1</literal>,
+ <literal>VAR2</literal>, <literal>VAR3</literal>
+ with the values set for those variables in PID1.</para>
+
+ <para>
+ See
+ <citerefentry project='man-pages'><refentrytitle>environ</refentrytitle><manvolnum>7</manvolnum></citerefentry>
+ for details about environment variables.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
<term><varname>StandardInput=</varname></term>
<listitem><para>Controls where file descriptor 0 (STDIN) of
the executed processes is connected to. Takes one of