Thursday, February 4, 2010
UNIX VS Linux
2/04/2010 09:05:00 PM | 
Posted by
VijayKumar Yadavalli
Recently my wife asked me what is the difference between UNIX and Linux. Basically I dont know much about these operating systems becauseI always work with windows operating systems. Since my wife asked the difference between those and even i want to know other operating systems, so I immediately jumped into google and find the following information.
Note: UNIX and Unix are totally different. UNIX is a specification and Unix is an Operating System.
To put it very generically, Linux is an operating system kernel, and UNIX is a certification for operating systems. The UNIX standard evolved from the original Unix system developed at Bell Labs. After Unix System V, it ceased to be developed as a single operating system, and was instead developed by various competing companies, such as Solaris (from Sun Microsystems), AIX (from IBM), HP-UX (from Hewlett-Packard), and IRIX (from Silicon Graphics). UNIX is a specification for baseline interoperability between these systems, even though there are many major architectural differences between them. Linux has never been certified as being a version of UNIX, so it is described as being "Unix-like." A comprehensive list of differences between Linux and "UNIX" isn't possible, because there are several completely different "UNIX" systems.
Summary
Note: UNIX and Unix are totally different. UNIX is a specification and Unix is an Operating System.
To put it very generically, Linux is an operating system kernel, and UNIX is a certification for operating systems. The UNIX standard evolved from the original Unix system developed at Bell Labs. After Unix System V, it ceased to be developed as a single operating system, and was instead developed by various competing companies, such as Solaris (from Sun Microsystems), AIX (from IBM), HP-UX (from Hewlett-Packard), and IRIX (from Silicon Graphics). UNIX is a specification for baseline interoperability between these systems, even though there are many major architectural differences between them. Linux has never been certified as being a version of UNIX, so it is described as being "Unix-like." A comprehensive list of differences between Linux and "UNIX" isn't possible, because there are several completely different "UNIX" systems.
Summary
- Unix is very old and Linux is based on it.
- Unix is intended for mainframes and high end computers and cannot run on most PCs while Linux can go from mainframes down to low end personal computers.
- 3. Unix is a proprietary while Linux is an open source.
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