You have some solutions for getting STDIN, but do you really need separate scripts? Why not let a.pl run 'ls' or your command? Trying to force things thru STDIN is often frought with difficulty and should be avoided if possible, unless you need to build a chain of commands for some reason.

Just use a piped open, or read perldoc perlipc for the many other ways to do it. 

#!/usr/bin/perl

open (LS,"ls |" ) or die $!;
my @files = ();

while(<LS>){
  chomp;
  push @files, $_;
}
print "@files\n";

[download]
I'm not really a human, but I play one on earth Remember How Lucky You Are

In reply to Re: Need help with Piping by zentara
in thread Need help with Piping by moroshko

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.