Search and replace a number Post: 302412578

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Top Forums UNIX for Dummies Questions & Answers Search and replace a number Post 302412578 by hs.giri on Tuesday 13th of April 2010 02:48:03 AM

04-13-2010

Registered User

Search and replace a number

Code:

a=`grep  -i a.sh filename.sh|cut -d "|" -f4`
b=`expr $a + 1`
filename=`grep  -i a.sh filename.sh`
while read line
do
echo $line
echo  $filename
if [ $line = $filename ]
then
echo "entered if"
nawk  ' BEGIN { FS="|"; OFS="|" }
{ sub('$a', '$b', $4)
print $0}'  filename.sh
fi
echo "exit if"
done < filename.sh

filename.sh
User  |id |file|count
--------------------------
oracle|0123|a.sh|0
oracle|0124|b.sh|1
oracle|0125|c.sh|3
oracle|0126|d.sh|0
oracle|0127|e.sh|1
oracle|0128|f.sh|3

expected  output
User |id |file|count
--------------------------
oracle|0123|a.sh|1
oracle|0124|b.sh|1
oracle|0125|c.sh|3
oracle|0126|d.sh|0
oracle|0127|e.sh|1
oracle|0128|f.sh|3

Every time i grep a file name in the file, the counter has to get updated by 1.
I tried this command, if the counter is same for other line, then changes for all the line which are same numbers, i require for single line update, please help me.......

regards,
giri

Last edited by Neo; 04-13-2010 at 03:52 AM.. Reason: add code tags.

hs.giri

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LEARN ABOUT PLAN9

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)