UNX操作系统分类 Mach BSD System V.3 0sF/1 System V.4 NEXT STEP* Free Sco BSD UNIX BSD/ IRIX OS SunOS Solaris Linux HP-UX UNIX definition DEC AIX 10 0SF/1 ,UNIX impieme起5o加 NEXTSTEP is dertved from BSD 4.34 UNIX 操作系统分类