Function opener::open

pub fn open<P>(path: P) -> Result<(), OpenError> where
    P: AsRef<OsStr>, 

Opens a file or link with the system default program.

Note that a path like "rustup.rs" could potentially refer to either a file or a website. If you want to open the website, you should add the "http://" prefix, for example.

Also note that a result of Ok(()) just means a way of opening the path was found, and no error occurred as a direct result of opening the path. Errors beyond that point aren't caught. For example, Ok(()) would be returned even if a file was opened with a program that can't read the file, or a dead link was opened in a browser.