How can I decompress an archive file having tar.zst?

The extention .zst means that the archive is compressed by zstd.

The tar command has an option -I (--use-compress-program) to specify a command for compression/decompression.

You can use it as follows.

$ tar -I zstd -xvf archive.tar.zst

Decompress it in Terminal.

unzstd yourfilename.zst

I know there aren't many resources available but I found this here: http://manpages.org/zstd

If you have a standard cmake + gcc build stack:

git clone https://github.com/facebook/zstd.git
cd zstd/build/cmake
cmake .
make
./programs/zstd -d /path/to/file.zst

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