This report consists of two papers on MENUNIX, an experimental interface to the approximately 300 programs and files available on the Berkeley UNIX 4.0 version of the UNIX operating system. The first paper discusses some of the psychological concerns involved in the design of MENUNIX; the second is a tutorial user manual for MENUNIX, in which the features of the program are more fully explained. It is pointed out that the goal of MENUNIX is to provide novice users with information about what commands are available and how they are used, while providing experts with an environment for efficiently executing commands. In short, MENUNIX provides a friendly user-interface to UNIX programs for users of all levels of expertise. Twenty-one references are listed. (Author/LLS)