386bsd:For a 386BSD system aux31:a Mac running A/UX version 3.1 bsd386:For a BSD/386 system bsd43:any generic 4.3BSD system bsd44:For a 4.4BSD system bsd44a:For a pre-release 4.4BSD system decosf1:DEC Alpha AXP running OSF/1, versions 1.2, 1.3, 2.0, 3.0 dgux:for DG AViiON with DG/UX 5.4+ dynix:any Sequent Running Dynix 3.0.x dynix32:any Sequent Running Dynix 3.2.x freebsd20:For a FreeBSD-2.0 (4.4BSD) system hpux7:any hp9000 running hpux version 7 or earlier hpux8:any hp9000 running hpux version 8 (may work with 9) hpux9:any hp9000 running hpux version 9 mtxinu:any VAX Running Mt. Xinu MORE/bsd ncr3000:For NCR 3000 series systems Release 2.00.02 and above - netbsd08:For a NetBSD system netbsd10:For a NetBSD-1.0 (4.4BSD) system next32:any m68k or intel NEXTSTEP v3.x system next33:any hppa or sparc NEXTSTEP v3.3 system next40:any motorola NEXTSTEP v4.x system osmp41a:any Solbourne running OS/MP 4.1A sunos4:any Sun running SunOS version 4.x sunos4mp:any multi-processor Sun running SunOS versions 4.1.2 or 4.1.3 sunos5:Any Sun running SunOS 5.x (Solaris 2.x) sunos54:Any Sun running SunOS 5.4 (Solaris 2.4) and later ?. svr4:For Intel based System V Release 4 svr42:For Intel based System V Release 4.2 (DESTINY) ultrix4:any DEC running ULTRIX V4.2 or later umax:Encore Multimax running any release of UMAX 4.3 utek:Tektronics 43xx running UTek 4.1