国产1.8t发动机排名:Unix的分类，谁详细知道？

MULTICS
Bell Labs, MIT, GE
|
|
UNICS
1960s
AT&T
(First version of UNIX)
|
|
UNIX
Late 1960s
Thompson,Ritchie
Bell Labs
_________|_____________
| |
BSD SV
UC Berkeley AT&T
| | |________________|_|______
_____| |__________________| |
| | |
4.3BSD OSF/1 SVR4
UC Berkeley OSF(IBM...) 1989
| (Mostly BSD) AT&T,SUN
________|_____ |
| | |
4.4BSD FreeBSD,NetBSD SVR4.2(UnixWare)
UC Berkeley 1991
Univel
|
|
Open Server R5
SCO

SV: UnixWare
SunOS 5.x(Solaris 2.x)
HP-UX
AIX
Open Server R5
IRIX

BSD(direct descendants):
BSD/OS
4.4BSDLite
FreeBSD
NetBSD

BSD(other descendants):
SunOS 4.1x(Solaris 1.x)
Digital Unix(Tru64 Unix, COSIX)

Linux 象sysv多一点吧.

: 至少：
: SUNOS----BSD
: Solaris---System V

: SV: UnixWare
: SunOS 5.x(Solaris 2.x)
: HP-UX
~~~~~HP-UX 10.x以上
从8.0到9.04，HP-UX是基于Berkeley（BSD）类型的UNIX。从10.0版本起，HP-UX开始基
于System V（SVR4）类型。