Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help 
DMESG(8)		FreeBSD	System Manager's Manual		      DMESG(8)

NAME
     dmesg -- display the system message buffer

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

DESCRIPTION
     dmesg displays the	contents of the	system message buffer.	It is most
     commonly used to review system startup messages.  On some systems the
     message buffer can	survive	reboot and be retained (in the hope of expos-
     ing information from a crash).

     The options are as	follows:

     -M	core
	     Extract values associated with the	name list from the specified
	     core instead of the default /dev/kmem.

     -N	system
	     Extract the name list from	the specified system instead of	the
	     default /bsd.

     -s	     Display the contents of the console message buffer	instead.  This
	     can be used to review rc(8) system	startup	messages.  This	option
	     is	limited	to the superuser.

FILES
     /var/run/dmesg.boot  copy of dmesg	saved by rc(8) at boot time

SEE ALSO
     syslogd(8)

HISTORY
     The dmesg command appeared	in 3BSD.

FreeBSD	13.0			October	6, 2016			  FreeBSD 13.0
NAME | SYNOPSIS | DESCRIPTION | FILES | SEE ALSO | HISTORY

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=dmesg&sektion=8&manpath=OpenBSD+6.9>

home | help