1 files changed, 7 insertions, 0 deletions
diff --git a/passt.1 b/passt.1
index cdca3e9..d3af916 100644
--- a/passt.1
+++ b/passt.1
@@ -96,6 +96,13 @@ Default is to log to system logger only, if started from an interactive
 terminal, and to both system logger and standard error otherwise.
 
 .TP
+.BR \-\-runas " " \fIUID\fR|\fIUID:GID\fR|\fILOGIN\fR|\fILOGIN:GROUP\fR
+If started as root, change to given UID and corresponding group if UID is given,
+or to given UID and given GID if both are given. Alternatively, login name, or
+login name and group name can be passed.
+Default is to change to user \fInobody\fR if started as root.
+
+.TP
 .BR \-h ", " \-\-help
 Display a help message and exit.