The features of UNIX operating system are
1. multi-tasking: more than one program can be run at a time.
2. Machine-independence: The System hides the machine architecture from the user, making it easier to write applications that can run on micros, mini and mainframe computers.
3. Multi-User Operations: UNIX is a multi-user system designed to support a group of users simultaneously. The system allows for the sharing of processing power and peripheral resources, white at the same time providing excellent security features.