exec 0.1.0

Use the POSIX exec function to replace the running program with another
Documentation 
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extern crate exec;

use std::env;
use std::process;

fn main() {
    let args: Vec<String> = env::args().skip(1).collect();
    let program = args[0].clone();

    // Exec the specified program.  Note that we pass `args[0]` twice: Once
    // as the name of the program to execute, and once as the first argument.
    //
    // If all goes well, this will never return.  If it does return, it
    // will always retun an error.
    let err = exec::execvp(program, &args);
    println!("Error: {}", err);
    process::exit(1);
}