system is odd. It returns the exit status. By tradition, status zero means success (which happens to be false), while failures are reported by a number that you can look up to see what went wrong (these are non-zero and therefore true).

Sometimes it helps to name the return value: 

  my $failure = system...;
  if ( $failure ) { ... }

[download]

Phil

The Gantry Web Framework Book is now available.

In reply to Re: Boolean (was Boolian) operators defy my understanding... by philcrow
in thread Boolean (was Boolian) operators defy my understanding... by cgmd

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