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-rw-r--r--man/os-release.xml11
1 files changed, 11 insertions, 0 deletions
diff --git a/man/os-release.xml b/man/os-release.xml
index 674180679b..5a0cfd2887 100644
--- a/man/os-release.xml
+++ b/man/os-release.xml
@@ -317,6 +317,17 @@
</para></listitem>
</varlistentry>
+ <varlistentry>
+ <term><varname>SYSEXT_LEVEL=</varname></term>
+
+ <listitem><para>A lower-case string (mostly numeric, no spaces or other characters outside of 0–9,
+ a–z, ".", "_" and "-") identifying the operating system extensions support level, to indicate which
+ extension images are supported (See:
+ <citerefentry><refentrytitle>systemd-sysext</refentrytitle><manvolnum>8</manvolnum></citerefentry>).
+ Example: <literal>SYSEXT_LEVEL=2</literal> or
+ <literal>SYSEXT_LEVEL=15.14</literal>.</para></listitem>
+ </varlistentry>
+
</variablelist>
<para>If you are reading this file from C code or a shell script