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Command: dmesg | Section: 8 | Source: OpenBSD | File: dmesg.8
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
exposing 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 Version 7 AT&T UNIX.
FreeBSD 14.1-RELEASE-p8 June 30, 2024 FreeBSD 14.1-RELEASE-p8