Hi there,
I don't have much experience in gzipping files, but recently I needed to parse a gzipped file with size of about 15 GB (~60 GB after decompression)
I used this fairly simple code to open it

##Open file - special case for gzip
    if ($input_file =~ /\.gz$/) {
        open(IN, "gunzip -c $input_file |") || die "can't open pipe to
+ $input_file";
    }
[download]

I then parsed it like a regular file and it took me about a minute (amazingly fast)
Hope this helps
Mister Guy



About half of the world's greatest inventions were invented by single men trying to impress women. The other half were invented by married men looking for an excuse to get out of the house