Using the std::process module in Rust, you can build Rust programs that spawn external processes. This is a helpful technique when you need to spawn a black-box vendor application, or rely on powerful applications (ie. FFMPEG) that are unrealistic to implement quickly in Rust. We'll be taking a look at how to use the built-in Command struct to spawn Linux processes synchronously and asynchronously. We'll also configure the processes with command line arguments, environment variables, and pipe data to the standard input stream.
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