Chapter 1 - RUST

1.1 Installing rustup on Linux or macOS

If you’re using Linux or WSL, open a terminal and enter the following command:

curl --proto '=https' --tlsv1.2 https://sh.rustup.rs -sSf | sh

Linux users should generally install GCC or Clang, according to their distribution’s documentation. For example, if you use Ubuntu, you can install the build-essential package.

To check whether you have Rust installed correctly, open a shell and enter this line:

$ rustc --version

You should see the version number, commit hash, and commit date for the latest stable version that has been released, in the following format:

rustc x.y.z (abcabcabc yyyy-mm-dd)

If you see this information, you have installed Rust successfully! If you don’t see this information, check that Rust is in your %PATH% system variable as follows.

$ echo $PATH

If that’s all correct and Rust still isn’t working, there are a number of places you can get help. Find out how to get in touch with other community members on [the community page][community].

Once Rust is installed via rustup, updating to a newly released version is easy. From your shell, run the following update script:

$ rustup update

To uninstall Rust and rustup, run the following uninstall script from your shell:

$ rustup self uninstall

1.2 Running Hello world example

create main.rs file with this rust code

fn main() {
    println!("Hello, world!");
}

• build and run using rustc

 rustc main.rs
$ ./main
Hello, world!