Virtual Memory Features Common with Windows NT Multiprocessing Scalable. Runs multiple processors. Must have login name and password. Permissions can be set on individual files and directories. Multiuser - Allows more than one user to use computer at one time.
Users can simultaneously log on directly to the computer.
Provides central administration. Provides the means for different computer platforms running UNIX to accurately and effectively communicate with others without the addition of special, pricey, after-market communications interfaces. Most OSs are proprietary - written by one manufacturer designed to run on one make or model of computer. Fewer replacement and modification of applications and data files needed. Variety of shells available.