Can some one please explain me what is happening here? 
#
# Care needs to be taken as the full file name (containing the path) i
+s
# sent to the RPM server.
#

# Validate Filename Structure
unless ($basename =~ /^(.{4}|.{10})_(.{10})_(.{8})_(.{6})_(.{10})_(.{8
+})\.(.{3})(\.gz)?$/) {
    if ((system @COPY, $filename, sprintf "%s%s%s%s", $UNHANDLED, $del
+imiter, $basename, $dupe_extn) == 0) {
        abort __LINE__,"bad filename '$filename', moved to unhandled d
+irectory";
    }
    else {
        abort __LINE__,"failed to move unhandled file '$filename'!";
    }
}
else {
    #
    # File Name Format Fits
    #
    ($issuercode, $outputname, $date, $time, $userid, $sequenceno, $fi
+letype) =
        ($1, $2, $3, $4, $5, $6, $7);
}

[download]
what is unless ($basename= .............is doing?

In reply to Re^3: To print the file in spool with the new format of input file also by skr302
in thread To print the file in spool with the new format of input file also by skr302

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.