Install Rust

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

Hello World Example

vi main.rs

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

Compile

rustc ./main.rs

Run

./main

Hello, world!

Using the Package Manager

Create a project using Cargo

cargo new hello_cargo

    Creating binary (application) `hello_cargo` package
note: see more `Cargo.toml` keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

This command creates a folder with the name of the new project containing a src directory and the dependency file called Cargo.toml.

hello_cargo
├── .git
│   ├── HEAD
│   ├── config
│   ├── description
│   ├── hooks
│   │   └── README.sample
│   ├── info
│   │   └── exclude
│   ├── objects
│   │   ├── info
│   │   └── pack
│   └── refs
│       ├── heads
│       └── tags
├── .gitignore
├── Cargo.toml
└── src
    └── main.rs

It has also initialized a new Git repository along with a .gitignore file. Git files won’t be generated if you run cargo new within an existing Git repository; you can override this behavior by using cargo new --vcs=git.

Cargo.toml

[package]
name = "hello_cargo"
version = "0.1.0"
edition = "2021"

[dependencies]                

Building

cargo build

Build and Run

cargo run

Build for Release 

cargo build --release

This command will create an executable in target/release instead of target/debug. The optimizations make your Rust code run faster, but turning them on lengthens the time it takes for your program to compile. This is why there are two different profiles: one for development, when you want to rebuild quickly and often, and another for building the final program you’ll give to a user that won’t be rebuilt repeatedly and that will run as fast as possible. If you’re benchmarking your code’s running time, be sure to run cargo build --release and benchmark with the executable in target/release.

References