7zip compressing the same file slightly different results

Posted by MicMit on Stack Overflow See other posts from Stack Overflow or by MicMit
Published on 2010-05-20T08:15:24Z Indexed on 2010/05/20 8:20 UTC
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7z

I am using 7za command line

File dfat_clist.xls in directory 2010_05_07

The same dfat_clist.xls in directory 2010_05_08

Zips are created in the same directory where the xls files resides

string pars = "a -tzip \"" + Path.Combine( SourceDir,ZipName) + "\" \"" + Path.Combine( SourceDir, Mask ) + "\"" ;

Parameters given to 7za are full paths for zip and xls. For some reason a couple of bytes are different A7 and A8 values for directories 2010_05_07 and 2010_05_8 respectively. How to achieve identical results and out of curiosity what causes this problem.

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7zip compressing the same file slightly different results - Developer IT

7zip compressing the same file slightly different results

7z

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