add getopt(3); always display program name on error (use fatal());

[unix-history] / usr / src / sbin / dmesg / dmesg.8

.\" Copyright (c) 1980 Regents of the University of California.
.\" All rights reserved.  The Berkeley software License Agreement
.\" specifies the terms and conditions for redistribution.
.\"
.\"     @(#)dmesg.8     6.3 (Berkeley) %G%
.\"
.TH DMESG 8 ""
.UC 4
.SH NAME
dmesg \- collect system diagnostic messages to form error log
.SH SYNOPSIS
.B dmesg
[ \- ]
.SH DESCRIPTION
.B N.B.:
.I Dmesg
is obsoleted by
.IR syslogd (8)
for maintenance of the system error log.
.PP
.I Dmesg
looks in a system buffer for recently printed diagnostic messages
and prints them on the standard output.
The messages are those printed or logged
by the system when errors occur.
If the
.B \-
flag is given, then
.I dmesg
computes (incrementally) the new messages since the last time it
was run and places these on the standard output.
.SH FILES
.ta 2i
/var/log/msgbuf scratch file for memory of \- option
.SH SEE ALSO
syslogd(8)