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DMESG(8) System Manager's Manual DMESG(8) NAME dmesg -- display the system message buffer SYNOPSIS dmesg [-ac] [-M core [-N system]] DESCRIPTION The dmesg utility displays the contents of the system message buffer. If the -M option is not specified, the buffer is read from the cur- rently running kernel via the sysctl(3) interface. Otherwise, the buffer is read from the specified core file, using the name list from the specified kernel image (or from the default image). The options are as follows: -a Show all data in the message buffer. This includes any syslog records and /dev/console output. -c Clear the kernel buffer after printing. -M Extract values associated with the name list from the specified core. -N If -M is also specified, extract the name list from the speci- fied system instead of the default, which is the kernel image the system has booted from. FILES /var/run/dmesg.boot usually a snapshot of the buffer contents taken soon after file systems are mounted at startup time SEE ALSO sysctl(3), syslogd(8) HISTORY The dmesg utility appeared in 3BSD. FreeBSD 13.1 October 3, 2016 DMESG(8)
NAME | SYNOPSIS | DESCRIPTION | FILES | SEE ALSO | HISTORY
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