BSD vs System V

[boebox]

Can someone tell me the main differences between BSD UNIX and System V UNIX?

 

[MikeLacey]

Tony,

That's quite a question, I've used both and I couldn't list the differences...

Do you mean differences in commands or architectural differences?

Mike
michael.j.lacey@ntlworld.com

http://www.cargill.com/

 

[steve1]

At one point, I used SCO(based on AT&T), and ones like SUN, etc(based on BSD), and DID notice some slight differences in how they work. The IEEE got TIRED of incompatibilities, and came up with Portable Operating System Interface Extensions(POSIX) A LONG time ago. ALSO, BOTH are based on AT&T(BSD licensed AT&T originally). So there are very few meaningful differences inherent in both. Heck, I have an old AT&T unix guide covering everything from lower level libraries, to really odd commands. I used a lot of these on BSD systems with NO problems!

MOST systems these days are based on BSD. I believe SUN, AIX, HP, and Linux are ALL based on BSD. OH, I know! Some purists will say Linux is Linus' own system, with NO unix code, and GNU utilities. The facts? Linus programmed Linux to be close to BSD! Gnu utilities often start from BSD code which comes from BSD. Just look at all the copyright statements.

Steve

 

[boebox]

Thanks guys

I guess my questions was based more on the architectural side of UNIX, I also found out that the 2 systems sometimes differ in system calls. I found a great one page summary of BSD vs System V.

http://www.cgd.ucar.edu/gds/thibaud/UNIX-tips/Tips/sysv-bsd.html

Tony