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diff --git a/sys-utils/dmesg.1 b/sys-utils/dmesg.1
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--- a/sys-utils/dmesg.1
+++ b/sys-utils/dmesg.1
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.\" Copyright 1993 Rickard E. Faith (faith@cs.unc.edu)
.\" May be distributed under the GNU General Public License
-.TH DMESG 1
+.TH DMESG 1 "Jun 2011"
.SH NAME
dmesg \- print or control the kernel ring buffer
.SH SYNOPSIS
.B dmesg
.RB [ options ]
+.sp
+.B dmesg \-\-clear
+.sp
+.B dmesg \-\-read-clear
+.RB [ options ]
+.sp
+.B dmesg \-\-console-level
+.I level
.SH DESCRIPTION
.B dmesg
is used to examine or control the kernel ring buffer.
-The program helps users to print out their bootup messages. Instead of
-copying the messages by hand, the user need only:
-.RS
-dmesg > boot.messages
-.RE
-and mail the
-.I boot.messages
-file to whoever can debug their problem.
+The default action is to read all messages from kernel ring buffer.
+
.SH OPTIONS
+The --clear, --read-clear and --console-level options are mutually exclusive.
+
.IP "\fB\-C, \-\-clear\fP"
Clear the ring buffer.
.IP "\fB\-c, \-\-read-clear\fP"