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Full Discussion: awk not working for calculating no of lines with criteria
Top Forums Shell Programming and Scripting awk not working for calculating no of lines with criteria Post 302832703 by Don Cragun on Monday 15th of July 2013 01:24:29 PM
Old 07-15-2013
Quote:
Originally Posted by siramitsharma
Seems to be working, thanks.

One more thing, if i want to extract the filename as well from filename.tar.gz file & get the count accordingly for match counter and not match counter, how would i do?

---------- Post updated at 10:00 PM ---------- Previous update was at 06:00 PM ----------

hi pamu,
when i tried removing BEGIN it gave an error, below is the code

Code:
 cat filename.tar.gz | awk -v mon="07" '
    {
 if (( (substr($0,26,2)=="02") && substr($0,84,2) == month  ))
  print $0 >> "a.txt"
  ++matchcounter
 else
 ++notmatch};
    END { print matchcounter","notmatch >> "countfile"}'
awk: cmd. line:5:  else
awk: cmd. line:5:  ^ syntax error

Can you please suggest
I don't know what you're trying to do, but there are a few obvious problems. Since I don't know what you're trying to do, I haven't made any attempt to test the following suggestion.

In earlier posts in this thread you were using zcat to unzip a compressed tar file. The code in orange in your script is now using cat instead of zcat???

The code in red in your script sets a variable named "mon" (and never uses it) and uses a variable named "month" (that has never been set).

And as shown by the diagnostic messages you're getting from awk, your if statement, is not using the correct syntax.

The following seems to fix the obvious issues above:
Code:
zcat filename.tar.gz | awk -v mon="07" '
{       if(substr($0,26,2)=="02" && substr($0,84,2) == mon) {
                print $0 >> "a.txt"
                ++matchcounter
        } else 
                ++notmatch
}
END {   print matchcounter","notmatch >> "countfile"}'

The changes marked in red are crucial; the other changes are editorial.

I don't see how this script can do anything useful with a tar file, but I haven't made any changes to account for that. Your if statement might make sense (although I didn't look at the definition of a tar header block to confirm it) if it was only looking at tar headers, but this script is looking at every line in the tar file (headers and archived file contents).
 

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LEARN ABOUT SUSE

bf_tar

BF_TAR(1)																 BF_TAR(1)

NAME

       bf_tar - shell script to write a tar file of a bogofilter directory to stdout

SYNOPSIS

       bf_tar [-r] [-R] bogofilter_directory

DESCRIPTION

       bf_tar bundles a bogofilter working directory in tar format and copies it to standard output (your console, or where you redirect it, see
       EXAMPLES below).

OPTIONS

       The -r option causes bf_tar to remove inactive log files after the archive has been written successfully. The default is to leave log
       files.

       The -R option causes bf_tar to remove inactive log files before the archive is written. This may reduce chances that the resulting archive
       is recoverable should it become damaged. The archive may be smaller though. The default is to leave log files.

EXIT STATUS

       The script exits with status code 0 if everything went well, and nonzero if it encountered trouble.

EXAMPLES

       o  bf_tar ~/.bogofilter > outfile.tar

	  Writes a standard .tar file containing the essential files from ~/.bogofilter to outfile.tar.

       o  bf_tar ~/.bogofilter | gzip -9 -c > outfile.tar.gz

	  Writes a gzipped .tar.gz file containing the essential files from ~/.bogofilter to outfile.tar.gz.

       o  bf_tar `pwd`/mydirectory > outfile.tar

	  Prepend $(pwd)/ or `pwd`/ if you want to specify an absolute path instead of a relative path.

NOTES

       This script is meant for use with Berkeley DB based bogofilter versions.

       This script requires a SUSv2 compliant pax utility.

       This script expects a SUSv2 compliant shell. Solaris systems should have the SUNWxcu4 package installed (when bogofilter is configured) so
       that /usr/xpg4/bin/sh can be used.

								    07/23/2007								 BF_TAR(1)
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