SyStem> BSDI' S commercial verSion of {Berkeley Standard DiStribution} {Unix}. BSD/OS iS a POSIX-compatible, Unix-like SyStem for the 80386, 486, and Pentium. It iS baSed on the BSDSoftware from UCB, a number of other SourceS, and componentS engineered by BSDI. The initial production releaSe of BSD/OSShipped in March, 1993. (1996-01-13)