History of Unix
- The Unix operating system originated at AT&T Bell Labs in 1969.
- System V Release 4 (SVR4) came from Unix System Labs in the late 1980's.
- Unix source code is currently owned by the Santa Cruz Operation (SCO).
- Because Unix was able to run on different hardware from different vendors, developers were encouraged to modify Unix and distribute it as their own value-added version. Many different types of Unix (known as flavours) evolved as a result of this, some which come to mind are AIX, DG-UX, FreeBSD, HP-UX, IRIX, NetBSD, OpenBSD, BSDI, Pyramid, SCO, Solaris, SunOS, Tru64, SVR4 and Ultrix.
- 2 systems that offer what many people consider to be a "more standard" version are SVR4 and Solaris.
- SVR4, which was developed jointly by USL and Sun Microsystems, merged features from Berkeley Software Distribution (BSD) and SVR3. This added about 2 dozen BSD commands and also some new commands to the basic Unix command set.
- Solaris consists of the SunOS operating system, plus additional features such as the Common Desktop Environment (CDE) and Java tools. The current Release of Solaris is Solaris 8 (01/01) but Solaris 6 and 7 are probably still the most widely used. Solaris 7 includes the SunOS 5.7 operating system, which in turn, merges SunOS 4.1 and SVR4 and the kernel also recieved significant enhancement
- Most Unix operating systems, inclusing Solaris, are available for home or business use without having to pay a license fee.
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