How to use the command 'rustup install' (with examples)

The rustup install command is used to install or update Rust toolchains. It is an alias of the rustup update command, but can only install or update one toolchain at a time. This command is useful when you want to manage and keep your Rust toolchains up to date.

Use case 1: Install or update a specific toolchain

Code:

rustup install <toolchain>

Motivation: You want to install a specific version of Rust or update an existing toolchain to the latest available version. This is useful when you are working on a project that requires a specific Rust version or you want to take advantage of the latest features and bug fixes in a newer version of Rust.

Explanation:

• <toolchain>: The name of the toolchain you want to install or update. This can be a specific version like 1.54.0 or one of the predefined names like stable, beta, or nightly. You can also specify prefixes like + or -. to add or remove components from the default toolchain.

Example output:

info: syncing toolchain for 'stable-x86_64-unknown-linux-gnu'
info: downloading component 'cargo'
info: downloading component 'rustc'
info: downloading component 'rust-std'
info: downloading component 'rust-docs'
info: installing component 'cargo'
info: installing component 'rustc'
info: installing component 'rust-std'
info: installing component 'rust-docs'
info: default toolchain set to 'stable-x86_64-unknown-linux-gnu'

  stable-x86_64-unknown-linux-gnu installed - rustc 1.54.0 (a178d0322 2022-10-08)

Conclusion:

The rustup install command is a helpful tool for managing and updating Rust toolchains. By using this command, you can easily install or update specific versions of Rust, ensuring that you have the necessary tools for your projects.