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Full Discussion: Extract fields before search pattern
Top Forums UNIX for Dummies Questions & Answers Extract fields before search pattern Post 302952990 by fristyguy on Monday 24th of August 2015 07:31:14 PM
Old 08-24-2015
Nope its not a home assignment. I have a log file which has details for various elapsed time for different SQL. Want to convert these into seconds and insert it into a table along with their elapsed time details in seconds.

The OS is: RedHat/6.3/x86_64 . Making use of bash shell. As i am not so great in shell programming posted this question. Also before this tired to look into various others threads on this forum to see for close match in search pattern

Used something like this but it did not help

Code:
cat Canary1.log | grep -o -P '.{0,4}second' | sed -e 's/ seconds//g' -e 's/ second//g' -e 's/ //g'

Code:
grep -i "elapsed time" Canary.log | tail -1 | sed 's/.*\(.\) second\(.\).*/\1/'

---------- Post updated at 06:31 PM ---------- Previous update was at 05:54 PM ----------

I have finally came up with this. Which i think suffices my requirement. Dont know if this is the best possible solution though.

Second:
Code:
cat Canary1.log | grep -o -P '.{0,3}second' | sed -e 's/[a-z]//g' -e 's/ //g'

Hour:
Code:
cat Canary1.log | grep -o -P '.{0,4}hour' | sed -e 's/one/1/g' -e 's/[a-z]//g' -e 's/ //g'

minute:
Code:
cat Canary1.log | grep -o -P '.{0,4}minute' | sed -e 's/one/1/g' -e 's/[a-z]//g' -e 's/ //g'

For your thoughs
Last edited by Corona688; 08-25-2015 at 01:58 PM..
 

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LEARN ABOUT V7

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)
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