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DMESG(8)			   BSD System Manager's Manual				 DMESG(8)

NAME
     dmesg -- display the system message buffer

SYNOPSIS
     dmesg [-a] [-M core [-N system]]

DESCRIPTION
     The dmesg utility displays the contents of the system message buffer.  If the -M option is
     not specified, the buffer is read from the currently running kernel via the sysctl(3) inter-
     face.  Otherwise, the buffer is read from the specified core file, using the name list from
     the specified kernel image (or from the default image).

     The options are as follows:

     -a      Show all data in the message buffer.  This includes any syslog records and
	     /dev/console output.

     -M      Extract values associated with the name list from the specified core.

     -N      If -M is also specified, extract the name list from the specified system instead of
	     the default, which is the kernel image the system has booted from.

FILES
     /var/run/dmesg.boot  usually a snapshot of the buffer contents taken soon after file systems
			  are mounted at startup time

SEE ALSO
     sysctl(3), syslogd(8)

HISTORY
     The dmesg utility appeared in 4.0BSD.

BSD					   June 5, 1993 				      BSD
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