11/2    What's the difference between a BSD derived OS and an SVR4 derived
        OS?  No, this is not a geek flame bait.  --geek
                \_ One is based on the freely-distributable codebase from
                   UCB, the other is based on code licensed from Unix System
                   Labs (formerly owned by AT&T, then Novell, now SCO).
                   SysVR4 folded in lots of BSD stuff though.
        \_ depends WHICH SVR4 derived OS. Solaris has lotsandlotsa
           BSDstuff. Main differences:
           * ps is different
           * df needs -k flag on SVR4
           * boottime scripts are different
          kernel wise... supopsedly, SVR4 does better IPC or something.
          \_ well it does IPC differently.  sysV is big on 'streams'
          \_ oh and the tty interface is very different.  ttyent vs. sgtty.
        \_ "ps -aux" (BSD) versus "ps -ef" (SVR4)