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Top Forums Shell Programming and Scripting Collect last 2 days data from /var/log/messages Post 302897536 by keelba on Monday 14th of April 2014 03:50:46 PM
Old 04-14-2014
The problem you have is at the first of the month. (day - 2) does not work when today is the 1st or 2nd. The command "date '2 days ago'" does not work with the standard Unix date command. That syntax is a part of the GNU version of date. I would recommend installing it as it seems to be 100% backwards compatible with the vanilla date command but, as you can see, adds much more functionality. It is a part of the coreutils package from GNU. Once you have this then SriniShoo's examples should work. I like to install this and call it gdate just to make sure to keep the original date command in tact.

There is also a shell script you can find on this site written by Perderabo which also does some pretty good date handling called datecalc. I like the GNU date a little better but, just in case you cannot install 3rd party software, datecalc is a pretty close second.
 

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ds.log(4)							   File Formats 							 ds.log(4)

NAME
ds.log - Availability Suite data services log file DESCRIPTION
The /var/adm/ds.log file contains the Availability Suite data services command log. The administration commands log activities to the file in the format: date time product: message Note that when the size of the log file exceeds 10 Mbytes, ds.log is renamed /var/adm/ds.log.bak and a new /var/adm/ds.log file is cre- ated. The ds.log fields are: date The date format is mmm nn, where mmm is the local three-character abbreviation for the month and nn is the day of the month on which the event occurred. time The time of the event, in hh:mm:ss format. product A product code that identifies which component of the data services produced the event. The code is separated from the message that follows by a colon (:) and a space. message A message that can extend over more than one line describing the event that occurred. The second or following lines are not pre- fixed by the date, time, and product code strings. EXAMPLES
The example below shows sample ds.log file content: Jan 25 05:26:17 ii: iiboot suspend cluster tag <none> Jan 25 05:32:02 ii: iiboot resume cluster tag <none> Jan 25 05:32:04 sv: svboot: resume /dev/vx/rdsk/bigmaster Jan 25 05:32:04 sv: svboot: resume /dev/vx/rdsk/bigshadow Jan 25 05:32:04 sv: svboot: resume /dev/vx/rdsk/mstvxfs Jan 25 05:32:04 sv: svboot: resume /dev/vx/rdsk/master01 ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +---------------------+---------------------------------------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +---------------------+---------------------------------------------------------+ |Architecture | x86 | +---------------------+---------------------------------------------------------+ |Availability | SUNWscmu | +---------------------+---------------------------------------------------------+ |Interface Stability | Committed | +---------------------+---------------------------------------------------------+ SEE ALSO
iiadm(1M), sndradm(1M), svadm(1M), attributes(5) SunOS 5.11 08 Jun 2007 ds.log(4)
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