# Wait

If you'd like to wait for a `process::Child` to finish, you must call `Child::wait`, which will return a `process::ExitStatus`.

    use std::process::Command;

    fn main() {
        let mut child = Command::new("sleep").arg("5").spawn().unwrap();
        let _result = child.wait().unwrap();

        println!("reached end of main");
    }

    $ rustc wait.rs && ./wait
    reached end of main
    # `wait` keeps running for 5 seconds
    # `sleep 5` command ends, and then our `wait` program finishes