https://crates.io/crates/cmd_lib
https://docs.rs/cmd_lib
https://github.com/rust-shell-script/rust_cmd_lib

https://github.com/rust-shell-script/rust_cmd_lib/tree/master/examples
https://github.com/rust-shell-script/rust_cmd_lib/blob/master/examples/tetris.rs

articles
2021
https://reposhub.com/rust/command-line/rust-shell-script-rust_cmd_lib.html