FH contains the reference in this case. That's why you should use 
open my $FH, '-|', qw{ ls usr } or die $!;

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لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

In reply to Re^3: Scoping question - will file handle be closed? by choroba
in thread Scoping question - will file handle be closed? by Monk::Thomas

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