The Unity environment provides users with a variety of interests and experience levels—the casual user, the office worker, the power user, and the programmer/system designer—with a space to work in and a set of tools to work with. Unity also provides off-the-shelf productivity and many ways to customize its look, feel, and response. Nautilus is the default simple, yet powerful file manager for Ubuntu. It can create, open, display, move, and copy files and directories as well as execute programs and scripts.