It wasn't required for that particular command, but it avoids the need for shell quoting. 

# XXX Buggy and susceptible to injection attacks.
open(my $cmd, "getfilesdata $file |")

# Fixed
open(my $cmd, '-|', 'getfilesdata', $file)

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In reply to Re^5: Question using system. by ikegami
in thread Question using system. by Anonymous Monk

Title:
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