2 %T U\s-2NIX\s0 Time-Sharing System: The U\s-2NIX\s0 Shell
21 %T Cooperating Sequential Processes
22 %B Programming Languages
31 %T M\s-2UNIX\s0, A Multiprocessing Version of U\s-2NIX\s0
34 %I Naval Postgraduate School
38 %T The U\s-2NIX\s0 Time-Sharing System
49 %T The M\s-2ULTICS\s0 System