Re: gzip -l problem

tsh@xxxxxxxxxxxxxxxxx ("T. Horsnell") writes:
> I think 'gzip -l' is having trouble reporting statistics
> on files whose uncompressed size is > 4Gbytes. Has anyone
> else seen this problem? Do I contact Gnu about this?

man gzip:

BUGS
The gzip format represents the the input size modulo 2^32, so the
--list option reports incorrect uncompressed sizes and compression
ratios for uncompressed files 4 GB and larger. To work around this
problem, you can use the following command to discover a large
uncompressed file's true size:

zcat file.gz | wc -c

The --list option reports sizes as -1 and crc as ffffffff if the
compressed file is on a non seekable media.

In some rare cases, the --best option gives worse compression than
the default compression level (-6). On some highly redundant files,
compress compresses better than gzip.

--
Mathieu Chouquet-Stringer
"Le disparu, si l'on vénère sa mémoire, est plus présent et
plus puissant que le vivant".
-- Antoine de Saint-Exupéry, Citadelle --

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