[KLUG Members] gzip -l error on large files

[Steve Petersen]

What's the word among you savvy on 7-zip?

Steve

Adam Tauno Williams wrote:
>>I get errors when I do
>>gzip -l <gz file>
>>on large files (over about 2 GB).  
>>Instead of reporting intelligent numbers, it shows odd numbers and the
>>compression doesn't make sense.
>>#ls -la file.tar.gz
>>-rw-r--r--    1 root     root     34626055051 Feb 16 01:16 file.tar.gz
>>#gzip -l file.tar.gz
>>         compressed        uncompressed  ratio uncompressed_name
>>         8323617911          2662473728 -1200.5% file.tar
>>I don't think the files are corrupt.
>>Anybody encountered this problem before?
> 
> 
> Yes.  I suspect gzip uses a signed 32 bit int in the calculations and it rolls
> over when it overflows.  It might be worth trying out bzip.
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