Hi Experts,

The code which i used is taking more time to check each file and print the line to output file

As each file contains millions of records, taking field1 from the condition file and searching all the files in @filelist, the files may be 1...........100, the size of each file is in GB

foreach my $file_name (@array) {
    open FILE, "$file_name" or die "File not exists";
    while ( my $line = <FILE> ) {
        my ( $field1, $field2 ) = split /\,/, $line;
        if (exists $records{$field1}) {
            $field_2 = $records{$field1};
            if( $field2 eq $field_2 )
            {
                print OUTPUT $line;
            }
        }
    }
}

[download]

Please help on this

In reply to Re^6: how to check if a particular value exist in list of files stored in an array by Perlseeker_1
in thread how to check if a particular value exist in list of files stored in an array by Perlseeker_1

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.