On Ubuntu 15.04 I have this file: **/usr/local/bin/myscript** (it's a script I made).

If I run this command under my account, it will do what I need it to do as a root user: **sudo /usr/local/bin/myscript**

I now want to make **/usr/local/bin/myscript** run on machine startup, but as a root user (as if I was running the sudo command but without having to type any password). How is this done on Ubuntu 15.04?