-Print version number.
-.RE
-.PP
-\fB\-\-help\fR
-.RS 4
-Print usage.
-.RE
-.PP
-\fBlog_priority=\fR\fB\fIvalue\fR\fR
-.RS 4
-Set the internal log level of udevd. Valid values are the numerical syslog priorities or their textual representations:
-\fBerr\fR,
-\fBinfo\fR
-and
-\fBdebug\fR.
-.RE
-.PP
-\fBstop_exec_queue\fR
-.RS 4
-Signal udevd to stop executing new events. Incoming events will be queued.
-.RE
-.PP
-\fBstart_exec_queue\fR
-.RS 4
-Signal udevd to enable the execution of events.
-.RE
-.PP
-\fBreload_rules\fR
-.RS 4
-Signal udevd to reload the rules from the config.
-.RE
-.PP
-\fBmax_childs\fR
-.RS 4
-Set the maximum number of events, udevd will handle at the same time.
-.RE
-.PP
-\fBmax_childs_running\fR
-.RS 4
-Set the maximum number of events, which are allowed to run at the same time.