Ignoring Compress::Zlib which could do this in a pipe-like fashion, you could also just pipe from gunzip: 

open my $fh, "gunzip -c $filename |";
while (<$fh>)
{
  # work with one line at a time here
}

[download]
Use less memory, too.

In reply to Re: Using ramfs to process files by Tanktalus
in thread Using ramfs to process files by jalewis2

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