Rust by Example

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

# `wait` keeps running for 5 seconds until the `sleep 5` command finishes

reached end of main