I know this sounds like a dumb question, but if I use the 7z extension with ultra compression, will the unzipped files be identical to their pre-zipped state?
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Yes, that is the idea of any packing/compress program like 7-Zip. You may use any extension (for example 7z, zip, xz, etc.), any level of compression, and any method of compression (LZMA, PPMd, Deflate, etc.) and compress and then uncompress file(s) should be the same as orginal file(s). If they are not - the program is buggy and you shouldn't use it. Why you just don't test this?
And remember:
- 7z, zip, rar can compress many files with directories
- gz, bz2, xz can compress only one file (for more files or directories you have to do one tar that will store the hierarchy of this files and directories and next compress by for example xz that tar file so extension will be tar.xz).
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
I know this sounds like a dumb question, but if I use the 7z extension with ultra compression, will the unzipped files be identical to their pre-zipped state?
Yes, that is the idea of any packing/compress program like 7-Zip. You may use any extension (for example 7z, zip, xz, etc.), any level of compression, and any method of compression (LZMA, PPMd, Deflate, etc.) and compress and then uncompress file(s) should be the same as orginal file(s). If they are not - the program is buggy and you shouldn't use it. Why you just don't test this?
And remember:
- 7z, zip, rar can compress many files with directories
- gz, bz2, xz can compress only one file (for more files or directories you have to do one tar that will store the hierarchy of this files and directories and next compress by for example xz that tar file so extension will be tar.xz).
Thanks mdadm