@sjw @alyx @histoire @kakol @lanodan @lucky @matrix @wolfie That should work, yes.
...Except I have no idea why you'd use zstd. Mixing archiving and compression (like .zip or .rar or .7z) considered harmful. Facebook software considered harmful. Bloated software considered harmful. Archiving something in a meme format that may or may not even still be maintained in ~10 years considered harmful. Just use bzip2.