Sorry for the confusion: 

my $enc_pass = shift ( @{ [ <$file> ] } );

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Will simply take the first line within the file, whose handle is stored in the $file variable, treat the handle like a listed de-referenced array-ref and shift that first line into the $enc_pass variable.

For example, if your file contains: 
ENCRYPTED_PASSWORD

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when you: 
print $enc_pass;

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you will get the output: 
ENCRYPTED_PASSWORD

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For $gpg_out, that is the handle to the command line gpg call. Another method of this would be to use backticks such as: 
my $gpg_output = `gpg --passphrase-fd 0 --decrypt --output oldfile new
+file`;

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Simply enough, the backticks will automagically run the command specified, giving the output back to the $gpg_output variable.

Hope this all clarifies!

---hA||ta----
print map{$_.' '}grep{/\w+/}@{[reverse(qw{Perl Code})]} or die while ( 'trying' );

In reply to Re^3: using a pipe by wazzuteke
in thread using a pipe by drock

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