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