the system message buffer
utility displays the contents of the
system message buffer. If the -M
option is not
specified, the buffer is read from the currently running kernel via the
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:
- Show all data in the message buffer. This includes any
syslog records and /dev/console output.
- Clear the kernel buffer after printing.
- Extract values associated with the name list from the
- If -M is also specified,
extract the name list from the specified system instead of the default,
which is the kernel image the system has booted from.
- usually a snapshot of the buffer contents taken soon after
file systems are mounted at startup time
utility appeared in