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


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 3.0BSD.

NetBSD 8.1                    September 11, 2016                    NetBSD 8.1