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Full Discussion: Dmesg with date possible?
Operating Systems HP-UX Dmesg with date possible? Post 302893378 by ahamed101 on Wednesday 19th of March 2014 03:00:44 AM
Old 03-19-2014
a thought - why not clear the messages everyday after storing it into a log file with current date? a cron should do.

---------- Post updated at 11:53 PM ---------- Previous update was at 11:48 PM ----------

I just noticed the logs are already rotated. Not sure if your system does it. Check these files
Code:
root@maximus:/tmp# ls -lrt /var/log/dmes*
-rw-r----- 1 root adm     28 Jan  8 09:39 /var/log/dmesg.4.gz
-rw-r----- 1 root adm  13463 Feb 17 00:53 /var/log/dmesg.3.gz
-rw-r----- 1 root adm  13376 Feb 17 19:41 /var/log/dmesg.2.gz
-rw-r----- 1 root adm  13544 Feb 19 19:57 /var/log/dmesg.1.gz
-rw-r----- 1 root adm  49431 Feb 23 12:36 /var/log/dmesg.0
-rw-r----- 1 root adm  49773 Mar  2 16:27 /var/log/dmesg

On a second thought I guess these are created either when the system boots up or shuts down.

---------- Post updated 03-19-14 at 12:00 AM ---------- Previous update was 03-18-14 at 11:53 PM ----------

Script log_dmesg
Code:
#!/bin/bash
echo "<< Log for $(date) >>" >> /var/log/mydmesg.log
dmesg >> /var/log/mydmesg.log
dmesg -C

Cron entry
Code:
0 0 * * * /path/to/your/script/log_dmesg

and may be include some log rotation logic if needed.
 

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LEARN ABOUT OPENSOLARIS

sulog

sulog(4)							   File Formats 							  sulog(4)

NAME

       sulog - su command log file

SYNOPSIS

       /var/adm/sulog

DESCRIPTION

       The  sulog file is a record of all attempts by users on the system  to execute the su(1M) command.  Each time  su(1M) is executed, an entry
       is added to the sulog file.

       Each entry in the sulog file is a single line of the form:

	 SU date time
	 result port user-newuser

       where

       date	  The month and date su(1M) was executed.  date is displayed in the form mm/dd where  mm is the month number and  dd  is  the  day
		  number in the month.

       time	  The time  su(1M) was executed. time is displayed in the form	HH/MM where  HH is the hour number (24 hour system) and  MM is the
		  minute number.

       result	  The result of the  su(1M) command.  A ` + ' sign is displayed in this field if the su attempt was successful; otherwise  a ` - '
		  sign is displayed.

       port	  The name of the terminal device from which  su(1M) was executed.

       user	  The user id of the user executing the  su(1M) command.

       newuser	  The user id being switched to with  su(1M).

EXAMPLES

       Example 1 A sample sulog file.

       Here is a sample sulog file:

	 SU 02/25 09:29 + console root-sys
	 SU 02/25 09:32 + pts/3 user1-root
	 SU 03/02 08:03 + pts/5 user1-root
	 SU 03/03 08:19 + pts/5 user1-root
	 SU 03/09 14:24 - pts/5 guest3-root
	 SU 03/09 14:24 - pts/5 guest3-root
	 SU 03/14 08:31 + pts/4 user1-root

FILES

       /var/adm/sulog	  su log file

       /etc/default/su	  contains the default location of  sulog

SEE ALSO

       su(1M)

SunOS 5.11							    6 Jun 1994								  sulog(4)
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