Rust: What is the difference between process::Command and tokio::process::Command?

Command — blocking process. tokio::Command — async process.

Command:

• Blocking.
• Blocks thread.
• For sync code.

tokio::Command:

• Async.
• Non-blocking.
• For async code.

1// Blocking
2use std::process::Command;
3let output = Command::new("ls").output()?;
4
5// Async
6use tokio::process::Command;
7let output = Command::new("ls").output().await?;

Key: std for blocking, tokio for async.