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Annotation of cci/usr/src/man/man8/dmesg.8, revision 1.1

1.1     ! root        1: .TH DMESG 8 "4 February 1983"
        !             2: .UC 4
        !             3: .SH NAME
        !             4: dmesg \- collect system diagnostic messages to form error log
        !             5: .SH SYNOPSIS
        !             6: .B /etc/dmesg
        !             7: [ \- ]
        !             8: .SH DESCRIPTION
        !             9: .I Dmesg
        !            10: looks in a system buffer for recently printed diagnostic messages
        !            11: and prints them on the standard output.
        !            12: The messages are those printed by the system when device (hardware) errors
        !            13: occur and (occasionally) when system tables overflow non-fatally.
        !            14: If the
        !            15: .B \-
        !            16: flag is given, then
        !            17: .I dmesg
        !            18: computes (incrementally) the new messages since the last time it
        !            19: was run and places these on the standard output.
        !            20: This is typically used with
        !            21: .IR cron (8)
        !            22: to produce the error log
        !            23: .I /usr/adm/messages
        !            24: by running the command
        !            25: .IP
        !            26: /etc/dmesg \- >> /usr/adm/messages
        !            27: .LP
        !            28: every 10 minutes.
        !            29: .SH FILES
        !            30: .ta 2i
        !            31: /usr/adm/messages      error log (conventional location)
        !            32: .br
        !            33: /usr/adm/msgbuf        scratch file for memory of \- option
        !            34: .SH BUGS
        !            35: The system error message buffer is of small finite size.  As
        !            36: .I dmesg
        !            37: is run only every few minutes, not all error messages
        !            38: are guaranteed to be logged.  This can be construed as a blessing rather
        !            39: than a curse.
        !            40: .PP
        !            41: Error diagnostics generated immediately before a system crash will
        !            42: never get logged.

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