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I am creating .zip-files on windows that I want to make available to Mac-Users (created with ZipFile.CreatefromDirectory from .NET Core). However, when I extract these files on my Mac (running Mojave, using the context-menu's "Extract File"), it re-creates the source-folder that I had zipped - and a flattened structure in side that folder: where I previously had root\foo\bar.txt, I now have a file "foo\bar.txt" in the root-folder. How I can get a "foo" folder with "bar.txt"? Did that problem arise when I build the .zip or do I need to extract differently in order to preserve directory-structure?

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The default install of macOS does not have an "Extra File" context menu - it seems like that could be a third party program / plugin.

The default install of macOS comes with the Archive Utility for uncompressing for example ZIP files. It will preserve folder structure by default.

So in your case, either you're using a third party extractor, that does not by default preserve folder structure, or you have made a mistake when making the compressed file.

I would test by building a small test folder structure on the Mac, then select the top folder in Finder and choose "Compress" from the context menu. Now you'll have a ZIP-file that you can try uncompressing in a different folder. This should create the same folder structure that you initially compressed.

  • Thanks! Your first 5 words solved the problem - the filemanager that I was using made that mistake. And I'm too much of a newbie to realize that this wasn't a macOS-Option... "Open with>Archive utility" did it correctly :) – MBaas Oct 18 '19 at 11:54

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