Well, if the file is not too big, a simple (but slightly convoluted) way to do that would be to read all the lines into an array, edit the first and last elements of the array, and then write the file back out again. Like so: 
open IN, "<", "file.txt" or die "Cannot open file.txt for reading:$!\n
+";
my @lines = <IN>;
$lines[0] =~ s/,+$/,/;
$lines[-1] =~ s/,+$/,/;
open OUT, ">", "file.txt" or die "Cannot open file.txt for writing:$!\
+n";
print OUT for @lines;
close OUT;

[download]

In reply to Re^3: Find & Replace by McDarren
in thread Find & Replace by mantra2006

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.