There is a way to write variables to the DATA section of your script, when the script exits, and you could store the current value there, and reread it everytime you start up, but it is cleaner to use the Inline::Files module. The hard way: 
#!/usr/bin/perl
use warnings;
use strict;

# The DATA filehandle is just a an open handle on the current 
# file. The current file is just the $0 variable (so long as 
# you haven't changed it)

# main part of script ...

my $count;
while(<DATA>){ $count = $_ ; print "$count\n";}
$count++;

# then redo the count update:
rewrite_count($count);

sub rewrite_count {
   my $count = shift;
   open(SELF,"+<$0")||die $!;
   while(<SELF>){last if /^__END__/}
   truncate(SELF,tell SELF);
   print SELF $count;
   close SELF;
}

__END__
1232

[download]
I'm not really a human, but I play one on earth.
Old Perl Programmer Haiku

In reply to Re: dynamic socket communication by zentara
in thread dynamic socket communication by hari9

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.