Compresses a file into a seekable zstd with special handling for .tar archives
It compresses a file into a seekable Zstandard archive by splitting the input into multiple frames.
If the input is a tar archive, it compresses each file in the archive into an independent frame—hence the name: tar 2 seekable zstd.
This enables fast seeking and extraction of a single file without decompressing the entire archive.
The compressed archive can be decompressed with any Zstandard tool, including zstd, and it can also be mounted with ratarmount.