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Top Forums Shell Programming and Scripting How to read file line by line and compare subset of 1st line with 2nd? Post 302926471 by derekludwig on Monday 24th of November 2014 03:33:33 PM
Old 11-24-2014
If you want to compare the 3rd field of adjacent records:
Code:
awk FS="|" 'prev != $3 { print; } { prev = $3; }'

But result (output) is desired?
 

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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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