环境
- Rust 1.56.1
- VSCode 1.61.2
概念
参考:https://doc.rust-lang.org/stable/rust-by-example/std_misc/process.html
示例
执行命令
use std::process::Command;
fn main() {
let output = Command::new("rustc")
.arg("--version")
.output()
.unwrap_or_else(|e| panic!("failed to execute process: {}", e));
if output.status.success() {
let s = String::from_utf8_lossy(&output.stdout);
print!("rustc succeeded and stdout was:\n{}", s);
} else {
let s = String::from_utf8_lossy(&output.stderr);
print!("rustc failed and stderr was:\n{}", s);
}
}
等待
use std::process::Command;
fn main() {
let mut child = Command::new("timeout").arg("/T").arg("5").spawn().unwrap();
let _result = child.wait().unwrap();
println!("reached end of main");
}
总结
了解了 Rust 中创建子进程的方式,并且异步执行并等待。