< operating 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 BSD software from UCB , a number of other sources, and components engineered by BSDI. The initial production release of BSD/OS shipped in March, 1993.
(1996-01-13)