NAME
dmesg
- display the system message buffer
SYNOPSIS
dmesg
[-M core]
[-N system]
DESCRIPTION
dmesg
displays the contents of the system message buffer.
The options are as follows:
- -M
-
Extract values associated with the name list from the specified core
instead of the default ``/dev/mem''.
- -N
-
Extract the name list from the specified system instead of the default
``/netbsd''.
The system message buffer is a circular buffer of a fixed size.
If the buffer has been filled, the first line of the
dmesg
output may not be complete.
The size of the message buffer is configurable at compile-time on
most systems with the
MSGBUFSIZE
kernel option.
Look for
MSGBUFSIZE
in
options(4)
for details.
FILES
/var/run/dmesg.boot
-
copy of dmesg at the time of last boot.
SEE ALSO
options(4),
syslogd(8)
HISTORY
The
dmesg
command appeared in
4.0BSD.