This is a reimplementation project of Yet Another Shell (yash) in Rust. Currently, only a minimal subset of the original yash is implemented. It will be extended to cover more features in the future.

Currently, yash can run shell scripts written in POSIX-compatible syntax. Support for interactive shell features is limited.

• Running shell scripts that only use POSIX-compatible syntax and features
• Minimal interactive shell features
• Enhanced shell features (Extensions to POSIX shell)
• Performance optimization
• Locale support

Yash should work on any Unix-like system. We are testing it on Linux and macOS. Windows is not supported, but it works under the Windows Subsystem for Linux (WSL).

To build and install yash, you need to have Rust installed. Go to https://rustup.rs/ and follow the instructions to install Rust. You will need the latest stable version of the Rust compiler.

Make sure the cargo tool installed by rustup is in your PATH. Then, run the following command:

cargo install yash-cli

To run a shell script, run yash3 with the script file as an argument. Without an argument, yash3 will start a read-eval loop, but interactive features are not yet implemented.

The user manual is not yet available, but you can refer to the original yash manual at https://magicant.github.io/yash/doc/.

TBD

Yash is distributed under GPLv3.

Exceptionally, you can reuse the yash-executor, yash-fnmatch and yash-quote crates in your software under the MIT License or Apache License 2.0, whichever at your option.