:warning: Show : $ rustup show
:warning: Default : $ rustup default nightly
:warning: Update :$ rustup update
:warning: Target : add, view, delete
:arrow_right: $ rustup target add arm-linux-androideabi
:arrow_right: $ rustup target list
:arrow_right: $ rustup target remove <TARGET>
:warning: Toolchain : view, install, uninstall, link
:arrow_right: $ rustup toolchain list
:arrow_right: $ rustup toolchain install beta
:arrow_right: $ rustup toolchain uninstall beta
:arrow_right: $ rustup toolchain link custom-toolchain /path/to/my/toolchain/sysroot
:warning: Override : view, set, unset
:arrow_right: $ rustup override list
:arrow_right: $ rustup override set <DIRECTORY>
:arrow_right: $ rustup override unset
:warning: Run : compiler, shell
:arrow_right: $ rustup run nightly rustc ~/Desktop/hello.rs
:arrow_right: $ red_flag: rustup run nightly bash
:warning: Set (Settings) : $ rustup set default-host
:warning: Component : add, view, delete
:arrow_right: $ rustup component add <COMPONENT>
:arrow_right: $ rustup component list
:arrow_right: $ rustup component remove <COMPONENT>
:warning: Self : update, uninstall
:arrow_right: $ rustup self update
:arrow_right: $ rustup self uninstall
:warning: Which : $ rustup which rustc
:warning: Completion : bash, zsh, fish
:arrow_right: $ rustup completions bash > /etc/bash_completion.d/rustup.bash-completion
:arrow_right: $ rustup completions zsh > ~/.zfunc/_rustup
:pencil2: add zshrc : fpath+=~/.zfunc
:arrow_right: $ rustup completions fish > ~/.config/fish/completions/rustup.fish
:warning: Doc : book, library
:arrow_right: $ rustup doc --book
:arrow_right: $ rustup doc --std
