Compress a Folder in PowerShell for use in Linux

Fresh Tar

I wasted quite a bit of time trying to find the correct way to zip a folder in PowerShell so that it could later be extracted in a Linux docker container.

TLDR; Turns out the standard unix tar command is now standard-issue in Windows—no need to use PowerShell functions at all.

tar -cvzf myfile.tgz mydir

Microsoft added this in 2017 —nice!

These didn’t work for me:

PowerShell’s Compress-Archive generates Windows path-separators, which Alpine/BusyBox’s version of unzip can’t handle (though Debian’s unzip can). This will be resolved by Microsoft in Version 1.2.3.
The Powershell Community Extensions that includes Gzip and Tar does not currently install cleanly on the most recent PowerShell without this workaround
I didn’t try GZipStream because I didn’t see an equivalent to Tar.

But if you're stuck with zip file with windows paths, this one-liner will rename the extracted files, create the directories and move them to the right location ([credit](https://stackoverflow.com/questions/44490413/how-to-rename-file-name-contains-backslash-in-bash#answer-44490964)):

for file in *\\*; do target="${file//\\//}"; mkdir -p "${target%/*}"; mv -v "$file" "$target"; done