What is '<<<' supposed to be?

Also, I'm not sure what you're trying to accomplish with the quoting, but I don't think you're doing it correctly. If you have the input for your command in a string, then just use it:
use IPC::Run qw(run);

my @arr = qw(
abc
def
);

my $input = join("", map "$_\n", @arr);
run [ sed => 's/[ad]/o/' ], "<", \$input, ">", \my $output;
print "O: [$output]\n";

[download]

Or compare these various quoting strategies (the first is similar to yours and I believe incorrect, the last is more like what I think you're trying to accomplish):

use IPC::Run qw(run);

my @arr = qw(
abc
def
);
run [ echo => q(') => join("\n", @arr) => q(') ], ">", \my $output;
print "O: [$output]\n";

run [ echo => q(') . join("\n", @arr) . q(') ], ">", \my $output;
print "O: [$output]\n";

run [ echo => join("\n", @arr) ], ">", \my $output;
print "O: [$output]\n";

[download]

In reply to Re: IPC::Run / bash pipe by runrig
in thread IPC::Run / bash pipe by ag4ve

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