Suppose I have two files:
file1.zst
file2.tar.zst
How can I decompress these files in terminal?
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 --use-compress-program=unzstd -xvf archive.tar.zst
$ tar --zstd -xvf archive.tar.zst