Signed-off-by: Sami Kerola <kerolasa@xxxxxx> --- sys-utils/dmesg.1 | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/sys-utils/dmesg.1 b/sys-utils/dmesg.1 index c060688..ce186d8 100644 --- a/sys-utils/dmesg.1 +++ b/sys-utils/dmesg.1 @@ -153,6 +153,28 @@ Wait for new messages. This feature is supported on systems with readable /dev/kmsg only (since kernel 3.5.0). .IP "\fB\-x\fR, \fB\-\-decode\fR" Decode facility and level (priority) number to human readable prefixes. +.IP "\fB\-\-time\-format\fR \fIformat\fR" +Print time stam using format +.IR ctime , +.IR delta , +.I reltime +or +.IR iso . +The three first time formats are aliases of time format specific options. +The +.I iso +is a +.B dmesg +implementation of ISO-8601 timestamp format. Purpose of this format is +to make comparing of timestamps in between two system, and other parsing, +easy. The defition of timestamp is YYYY-MM-DD<T stands for date and time +separator>HH:MM:SS,<microseconds><-+><GMT-0 timezone offset>. +.IP +The +.I iso +time format has the same issue as +.IR ctime , +the time may be inaccurate if a system is suspended and resumed. .SH SEE ALSO .BR syslogd (8) .SH AUTHORS -- 1.8.3 -- To unsubscribe from this list: send the line "unsubscribe util-linux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
