precomp/antix/... are tools that can bruteforce the original gzip parameters and let you recreate the byte-identical gzip archive.
The output is something like {precomp header}{gzip parameters}{original uncompressed data} which you can then feed to a stronger compressor.
A major use case is if you have a lot of individually gzipped archives with similar internal content, you can precomp them and then use long-range solid compression over all your archives together for massive space savings.
A major use case is if you have a lot of individually gzipped archives with similar internal content, you can precomp them and then use long-range solid compression over all your archives together for massive space savings.
Or even a single gzipped archive with similar pieces of content that are more than 32KB apart.
Comments
precomp/antix/... are tools that can bruteforce the original gzip parameters and let you recreate the byte-identical gzip archive.
The output is something like {precomp header}{gzip parameters}{original uncompressed data} which you can then feed to a stronger compressor.
A major use case is if you have a lot of individually gzipped archives with similar internal content, you can precomp them and then use long-range solid compression over all your archives together for massive space savings.
Or even a single gzipped archive with similar pieces of content that are more than 32KB apart.