Dear Monks,

I'm trying to understand the IPC::Run docs. Here is how they begin:

## First,a command to run:
      my @cat = qw( cat );

   ## Using run() instead of system():
      use IPC::Run qw( run timeout );

      run \@cmd, \$in, \$out, \$err, timeout( 10 ) or die "cat: $?"
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What the?? How does the command contained in the array @cat ever get executed?

Is there a tutorial somewhere on IPC::Run? I can't find one, and I can't make any sense of the docs.