— display the system message
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 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:
- Show all data in the message buffer. This includes any
syslog records and /dev/console output.
- 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