The command line arguments can be accessed using std::env::args, which
returns an iterator that yields a String for each argument:
use std::env;
fn main() {
let args: Vec<String> = env::args().collect();
// The first argument is the path that was used to call the program.
println!("My path is {}.", args[0]);
// The rest of the arguments are the passed command line parameters.
// Call the program like this:
// $ ./args arg1 arg2
println!("I got {:?} arguments: {:?}.", args.len() - 1, &args[1..]);
}
$ ./args 1 2 3
My path is ./args.
I got 3 arguments: ["1", "2", "3"].