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sindresorhus / gulp-zip

ZIP compress files
MIT License
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Zip utility giving me different md5sum every time in Linux #92

Closed ipengyo closed 7 years ago

ipengyo commented 7 years ago

https://stackoverflow.com/questions/19523063/zip-utility-giving-me-different-md5sum-every-time-in-linux

The archive being generated does not only contain the compressed file data, but also "extra file attributes" (as refered in zip documentation), as file timestamps, file attributes, ...

If this metadata is different between compressions, you will never get the same checksum, as the metadata for the compresed file has changed and has been included in the archive.

You can use zip's -X option (or the long --no-extra option) to avoid including the files extra attributes in the archive:

zip -X foo.zip foo-file Sucessive runs of this command without file modifications must not change the hash of the archive.

Is there any such option?

sindresorhus commented 7 years ago

No, but you could request it at https://github.com/thejoshwolfe/yazl, which is the library we use to do the actual zipping.