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Full Discussion: Measurement file parsing
Top Forums Shell Programming and Scripting Measurement file parsing Post 302629205 by yoda9691 on Tuesday 24th of April 2012 11:52:29 AM
Old 04-24-2012
Measurement file parsing
I have an application performance measurement file with one thousand lines. Each line has some text indicating type of measurement and the last field containing the measured value. Each of the file has a unique measurement. I am interested in only extracting about 100 of those measurements and put them in a comma delimited file. I have written a ksh script with multiple grep commands with each grep searching for a uniq pattern. This method opens same file over and over again but I am wondering if there is a better scripting method or something other than ksh script that would eliminate multiple greps.

Example of input file
Code:
some text indicating type of measure1 is here value
some other zdfg value
string indicating yet another abdf value
....
...
...
last line with cpu_use value

Here is what I have done to extract only the measure that I am interested in
Code:
Measure1=`grep measure1 file | awk '{print $NF}'`
zdfg=`grep zdfg file | awk '{print $NF}'`
cpu_use=`grep cpu_use file | awk '{print $NF}'`

and so on

Code:
echo $Measure1,$zdfg,$cpu_use

This gives me following output
Code:
value,value,value,value....

I am sure there a better and efficient way. Please suggest.
Last edited by radoulov; 04-24-2012 at 01:02 PM.. Reason: Code tags, please!
 

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LEARN ABOUT POSIX

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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