pub fn spawn_one(cmd: &str) -> Result<Child>Expand description
Spawn one command via the platform shell with stdin piped.
On Unix: /bin/sh -c '<cmd>'. On Windows: cmd /C "<cmd>".
Stdout and stderr are inherited from the parent (Stdio::inherit()) so
children write to the parent’s terminal — outputs interleave
nondeterministically (matches moreutils default).