I'm not sure what I'm doing wrong here (or why this is reporting success as I'm not getting any output). The end goal is to echo an array of iptables save data into iptables-restore:

#!/usr/bin/env perl

use strict;
use warnings;

use Data::Dumper;
use IPC::Cmd qw/run/;

my @in = ("Test foo", "Test bar");

print "In: " . Dumper(@in);

my @out = 
  run(command => 'echo -n ', \@in , '| sed -r "s/(foo|bar)/pass/"');

print "Out: " . Dumper(@out);

[download]

Output:

In: $VAR1 = 'Test foo';
$VAR2 = 'Test bar';
Out: $VAR1 = 1;
$VAR2 = undef;
$VAR3 = [];
$VAR4 = [];
$VAR5 = [];

[download]

UPDATE:

IPC::Run does work as @runrig said - I just didn't notice -r got removed from said which changes the regex sed uses.

#!/usr/bin/env perl

use strict;
use warnings;

use Data::Dumper;
use IPC::Run qw/run/;

use IPC::Run qw(run);

my @in = ("Test foo", "Test bar");

run [echo => -n => join("\n", @in)] , '|', [ sed => -r => "s/(foo|bar)
+/pass/" ], '>', \my $out;

print "Redir: " . Dumper($out);

[download]

In reply to IPC::Cmd pipe array by ag4ve

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.