Function nix::unistd::execveat

pub fn execveat(
    dirfd: RawFd, 
    pathname: &CString, 
    args: &[CString], 
    env: &[CString], 
    flags: AtFlags
) -> Result<Void>

Execute program relative to a directory file descriptor (see execveat(2)).

The execveat function allows for another process to be "called" which will replace the current process image. That is, this process becomes the new command that is run. On success, this function will not return. Instead, the new program will run until it exits.

This function is similar to execve, except that the program to be executed is referenced as a file descriptor to the base directory plus a path.