I appreciate that you're just using "mkdir -p" as an example here... but for any passers by who are hunting for a way to make a path of directories they would be better following blue_cowdawg's advice in Re: "mkdir -p" equivalent? and using mkpath in File::Path

If they have a reason they can't use File::Path (even though it's a core module these days) they would be better using the built-in mkdir than shelling out to a system one. 

use strict;
use warnings;

my $seperator = '/'; # Change this for a non-Unix compatible OS

my @dirs = ("some/long/dir/path");

for my $path ( @dirs ) {

    my @path = split($seperator, $path);

    my $cat_path;

    for my $dir (@path) {

        $cat_path .= $dir;

        unless ( -d $cat_path ) {

            mkdir ( $cat_path ) ||
                die "Can't mkdir '$cat_path': $!\n";

            print "mkdir: created directory `$cat_path'\n";

        }

        $cat_path .= $seperator;

    }

}

[download]
and Three has dealt with some of the problems faced by Windows users in Re: Perl API that emulates mkdir -p on unix? (yes, for *Windows*) :o)

In reply to Re: How to build system calls using '=>' by serf
in thread How to build system calls using '=>' by loris

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.