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28 .\" @(#)dmesg.8 8.1 (Berkeley) 6/5/93
36 .Nd "display the system message buffer"
40 .Op Fl M Ar core Op Fl N Ar system
44 utility displays the contents of the system message buffer.
47 option is not specified, the buffer is read from the currently running kernel
51 Otherwise, the buffer is read from the specified core file,
52 using the name list from the specified kernel image (or from
55 The options are as follows:
56 .Bl -tag -width indent
58 Show all data in the message buffer.
59 This includes any syslog records and
63 Extract values associated with the name list from the specified core.
68 extract the name list from the specified system instead of the default,
69 which is the kernel image the system has booted from.
72 .Bl -tag -width ".Pa /var/run/dmesg.boot" -compact
73 .It Pa /var/run/dmesg.boot
74 usually a snapshot of the buffer contents
75 taken soon after file systems are mounted