I am a newbie to perl, and have no teacher. When reading the stonehenge article deep copy http://www.stonehenge.com/merlyn/UnixReview/col30.html, there are some code as follows: 
   while (@x = getpwent()) {
    $info{$x[0]} = \@x;
    print "$info{$x[0]}\n";
  }

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I can't understand the function getpWent(). This function can be called many times and how to transfer input argument to it, then get different output argumeng or return array? Who can give a simple example for this function or this question?

In reply to [stonehenge] deep copy what's the function getpwent() by Thai Heng

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