dmesg: add note about -F format to the man page

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/sys-utils/dmesg.1 b/sys-utils/dmesg.1
index 81b9726a66dc7c55c0956734d5eae22ca6ec5a22..b87b2301b51e1f4ad52baab592db80d2a2374a18 100644 (file)
--- a/sys-utils/dmesg.1
+++ b/sys-utils/dmesg.1
@@ -49,8 +49,9 @@ Display the local time and the delta in human-readable format.  Be aware that
 conversion to the local time could be inaccurate (see \fB\-T\fR for more
 details).
 .IP "\fB\-F\fR, \fB\-\-file \fIfile\fR"
-Read the messages from the given
+Read the syslog messages from the given
 .IR file .
+Note that \fB\-F\fR does not support messages in kmsg format. The old syslog format is supported only.
 .IP "\fB\-f\fR, \fB\-\-facility \fIlist\fR"
 Restrict output to the given (comma-separated)
 .I list