Ask HN: Small software startup essential software

Need information for how to prevent code theft, 1) essential configuration for Ubuntu system which prevents copying via usb or cd. Any softwares/tools? 2) Bitbucket how can you prevent an user downloading code from your repo on another machine?

Any other must do's essentials from entrepreneurs is appreciated. Also, what kind of a desktop config you should provide devs? This is for a bootstrapped company so money is important.