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Full Discussion: Problem assigning a counter for particular pattern
Top Forums Shell Programming and Scripting Problem assigning a counter for particular pattern Post 302351570 by reddybs on Wednesday 9th of September 2009 03:38:45 AM
Old 09-09-2009
Problem assigning a counter for particular pattern
Hi,
I have a script that compares two files(which are updated dynamically by a daemon) and evaluate results from the comparision.
For the first line of comparision from the file1, i will grep some part of the line in file with file1 and set a counter for that particular comparison. So for each and every line there should be a counter variable assigned and set.

So now the first run of script ends... and the next run starts.
For the next run, the script may find some more patterns from file and will grep for that pattern in file1 and set a counter for the new patterns...., above process continues.

Here, I have a problem storing a counter variable for a particular pattern. If script matches the particular pattern on its next run, it should increment the counter assigned for that pattern - else it should leave the counter for that pattern as it is.

This is what i have tried:

Code:
#!/bin/bash
file="/home/reddybs/test/failures.log"
file1="/home/reddybs/test/failures.log1"
file3="/home/reddybs/test/pc.chk"
ff=0
while read LINE
do
 
         i=`echo $LINE | awk '{print $4,$5}'`
#echo $i
 
         grep -w "$i" $file1 >>/dev/null
 
         if [ `echo $?` -eq 0 ]
         then
                echo "matched"
#Please guide me to assign a counter for this particular pattern               
         ff=`expr $ff + 1`
                echo "$ff ,Matched count for $i" >>$file3
         else
                echo "Yet to implement"
         fi
 
done < $file

Struk in assiging/set a counter variable for the particluar pattern/match/comparision/loop.

Thanks in advance for all your time.....

Cheers,
Sai
 

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LEARN ABOUT MINIX

grep

GREP(1) 						      General Commands Manual							   GREP(1)

NAME

       grep - search a file for lines containing a given pattern

SYNOPSIS

       grep [-elnsv] pattern [file] ...

OPTIONS

       -e     -e pattern is the same as pattern

       -c     Print a count of lines matched

       -i     Ignore case

       -l     Print file names, no lines

       -n     Print line numbers

       -s     Status only, no printed output

       -v     Select lines that do not match

EXAMPLES

       grep mouse file	   # Find lines in file containing mouse

       grep [0-9] file	   # Print lines containing a digit

DESCRIPTION

       Grep  searches  one  or	more  files (by default, stdin) and selects out all the lines that match the pattern.  All the regular expressions
       accepted by ed and mined are allowed.  In addition, + can be used instead of * to mean 1 or more occurrences, ? can be used to mean 0 or  1
       occurrences,  and  |  can  be used between two regular expressions to mean either one of them.  Parentheses can be used for grouping.  If a
       match is found, exit status 0 is returned.  If no match is found, exit status 1 is returned.  If an error is detected,  exit  status  2	is
       returned.

SEE ALSO

       cgrep(1), fgrep(1), sed(1), awk(9).

																	   GREP(1)
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