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copied!<p>If you don't want the contents of STDERR, then the capture() command from <a href="http://search.cpan.org/perldoc?IPC::System::Simple" rel="noreferrer">IPC::System::Simple</a> module is almost exactly what you're after:</p> <pre><code> use IPC::System::Simple qw(capture system $EXITVAL); my $output = capture($cmd, @args); my $exit_value = $EXITVAL; </code></pre> <p>You can use capture() with a single argument to invoke the shell, or multiple arguments to reliably avoid the shell. There's also capturex() which never calls the shell, even with a single argument.</p> <p>Unlike Perl's built-in system and backticks commands, IPC::System::Simple returns the full 32-bit exit value under Windows. It also throws a detailed exception if the command can't be started, dies to a signal, or returns an unexpected exit value. This means for many programs, rather than checking the exit values yourself, you can rely upon IPC::System::Simple to do the hard work for you:</p> <pre><code> use IPC::System::Simple qw(system capture $EXIT_ANY); system( [0,1], "frobincate", @files); # Must return exitval 0 or 1 my @lines = capture($EXIT_ANY, "baznicate", @files); # Any exitval is OK. foreach my $record (@lines) { system( [0, 32], "barnicate", $record); # Must return exitval 0 or 32 } </code></pre> <p>IPC::System::Simple is pure Perl, has no dependencies, and works on both Unix and Windows systems. Unfortunately, it doesn't provide a way of capturing STDERR, so it may not be suitable for all your needs.</p> <p><a href="http://search.cpan.org/perldoc?IPC::Run3" rel="noreferrer">IPC::Run3</a> provides a clean and easy interface into re-plumbing all three common filehandles, but unfortunately it doesn't check to see if the command was successful, so you'll need to inspect $? manually, which is not at all fun. Providing a public interface for inspecting $? is something which is on my <a href="http://rt.cpan.org/Public/Bug/Display.html?id=26519" rel="noreferrer">to-do list</a> for IPC::System::Simple, since inspecting $? in a cross-platform fashion is not a task I'd wish on anyone.</p> <p>There are other modules in the <a href="http://search.cpan.org/search?query=IPC%3A%3A&mode=all" rel="noreferrer">IPC::</a> namespace that may also provide you with assistance. YMMV.</p> <p>All the best,</p> <p>Paul</p>

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