Here's a simple "Hello, World!" program in Rust:

rust hello world program

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

To run the program, save it to a file with a .rs extension and use the rustc command to compile it. Then, you can run the resulting executable file:

$ rustc hello.rs
$ ./hello
Hello, World!

Alternatively, you can use the cargo command to build and run the program in one step:

$ cargo run --bin hello
   Compiling hello v0.1.0 (/path/to/hello)
    Finished dev [unoptimized + debuginfo] target(s) in 0.34s
     Running target/debug/hello
Hello, World!