[Sunhelp] BSD vs System V

[Jarrett m Carver]

Here are some of the differences in features.  SystemV.4 was supposed to
be a combination of BSD, SunOS, and
the SystemV, it has some features from all three.  Both flavors evolved
from UNIX Version 6 from there Berkley University developers added many
features as Bell Labs continued to Work on Unix Version 7 to System V.4.

You can get a better idea of what was added in each release from
http://www.ee.ed.ac.uk/online/faq/cuq/cuq-faq-6.html

 Feature                       Typical in SVRx                 Typical
in xBSD

kernel name
/unix                                              /vmunix
terminal init             /etc/inittab
/etc/ttys (only getty to 4.3)
boot init                     /etc/rc.d directories
/etc/rc.* files
mounted FSs         /etc/mnttab
/etc/mtab
usual shell              sh,
ksh                                             csh, #! hack
native FS                 S5 (blk: 512-2K)                        UFS
(blk: 4K-8K)
                                   file names <= 14 bytes
file names < 255 bytes
groups                    need newgrp(1)
automatic membership
                                    SVR4: multiple groups
print subsystem   lp, lpstat, cancel                          lpr, lpq,
lprm (lpd daemon) ??
terminal control  termio, terminfo,                       termios (sgtty
before 4.3reno)
                                        SVR4: termios (POSIX)
termcap
 job control               >=
SVR4                                         yes
ps command            ps
-ef                                              ps -aux
multiple wait
poll                                                    select
string fcns               memset, memcpy                      bzero,
bcopy
process mapping   /proc  (SVR4)



Jean-Marc Beaudoin wrote:

> Good day,
>
> For my personnal knowledge....
>
> Why BSD & System V?
>
> What are the differences?
>
> Regards,
>
>           Jean-Marc Beaudoin, T.P.
>             V.I.P. ExcelNet Inc.
>           http://www.vipxlnet.com
>           jmbeaudoin at vipxlnet.com
>
>
> _______________________________________________
> SunHELP maillist  -  SunHELP at sunhelp.org
> http://www.sunhelp.org/mailman/listinfo/sunhelp



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Jarrett Carver                            DIA OSIS System Administrator
Re:AFcarjm at dia.osis.gov                   CC:admin at dia.osis.gov

"The opinions expressed herein are not necessarily those of my employer,
 not necessarily mine, and probably not necessary."

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