doc/userguide: document --include command line option

diff --git a/doc/userguide/partials/options.rst b/doc/userguide/partials/options.rst
index f6487f10c205d6602387c49e608a452d1c93e4f3..85a77b74c389d1842d16ec078e3f98a777a5bd38 100644 (file)
--- a/doc/userguide/partials/options.rst
+++ b/doc/userguide/partials/options.rst
@@ -12,6 +12,22 @@
 
    Path to configuration file.
 
+.. option:: --include <path>
+
+   Additional configuration files to include. Multiple additonal
+   configuration files can be provided and will be included in the
+   order specified on the command line.  These additonal configuration
+   files are loaded as if they existed at the end of the main
+   configuration file.
+
+   Example including one additional file::
+
+     --include /etc/suricata/other.yaml
+
+   Example including more than one additional file::
+
+     --include /etc/suricata/other.yaml --include /etc/suricata/extra.yaml
+
 .. option:: -T
 
    Test configuration.