Is this what you want? 
#!/usr/bin/perl

use strict;

while( <DATA> ) {
    if ( /^[A-Z]{2}:\s/ ... /\n\n/ ) {
        print;
    }
}
__DATA__
Thu Mar 19 2:34:14 EDT 2009
STC
Data query:

Record 1 of 1

DN: Data Name
Information Sciences
TI: Title
Distribution and abundance of bound volumes of the file in institute
shelves from 1978
AU: Author
Sahu, SR; Gawas, AKG
AF: Affiliation
Inst. of document scanning and documentation profiling at library,
toward the prograssive society and establishment
SO: Source
Test document file. Vol. 5, no. 1, pp. 1-14. Jul 1990.
DE: Descriptors
Article Subject Terms: Abundance; Ecological distribution;
Geographical distribution; Life cycle; Zooplankton; Article Taxonomic
Terms: Euphausia; Article Geographic Terms: ISW,
LA: Language
English

[download]

In reply to Re: Need help to make correction in a perl script by bichonfrise74
in thread Need help to make correction in a perl script by srsahu75

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.