rustup --version (return code: 0)
rustup 1.0.0 (17b6d21 2016-12-15)
rustup --help (return code: 0)
rustup 1.0.0 (17b6d21 2016-12-15) The Rust toolchain installer USAGE: rustup [FLAGS] [SUBCOMMAND] FLAGS: -v, --verbose Enable verbose output -h, --help Prints help information -V, --version Prints version information SUBCOMMANDS: show Show the active and installed toolchains update Update Rust toolchains default Set the default toolchain toolchain Modify or query the installed toolchains target Modify a toolchain's supported targets component Modify a toolchain's installed components override Modify directory toolchain overrides run Run a command with an environment configured for a given toolchain which Display which binary will be run for a given command doc Open the documentation for the current toolchain man View the man page for a given command self Modify the rustup installation set Alter rustup settings completions Generate completion scripts for your shell help Prints this message or the help of the given subcommand(s) rustup installs The Rust Programming Language from the official release channels, enabling you to easily switch between stable, beta, and nightly compilers and keep them updated. It makes cross-compiling simpler with binary builds of the standard library for common platforms. If you are new to Rust consider running `rustup doc --book` to learn Rust.