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command-line-rust
Code for Command-Line Rust (O'Reilly, 2022, ISBN 9781098109417) https://learning.oreilly.com/library/view/command-line-rust/9781098109424/
Clone the Rustlings repository locally and try solving as much as you can.
Read the book, I don't think it's mandatory to do all of the exercises.
You absolutely must write programs, preferably using tests to ensure you are creating correct and reproducible code. May I suggest starting with my book, Command-Line Rust (O'Reilly, 2022). All the code/data/tests are in https://github.com/kyclark/command-line-rust Note that there are branches showing how to use the 4.x version of clap (command-line argument parser) rather than the 2.33 that was current when the book was published.