Two notes:
  1. Your pipe is on the wrong side. It should be: 
    open(P,'./from.pl|');
while (<P>) {
   print;
   $count++;
}
close(P);
print "$count\n";

    [download]
    which gives you what you expect.
  2. Make sure your scripts are mode +x! If you can't run them from the command line, they won't work.
In general, though, remember - put the pipe on the side as you would if you ran them on the command line; that is: ./from.pl | ./piper.pl would be what you'd run in this case, so use the pipe after the script name. (If you wanted to write to it, you'd put the pipe before.)

In reply to Re: Pipe Question by sachmet
in thread Pipe Question by Bliss

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.