If I understand your question....vague as it is....yes, the Unix OS source code is free and open source.
To create a Free OS like the UNIX Operating System, They wanted to create a system that was like UNIX without all of the intellectual property issues that UNIX had. (UNIX was proprietary software).
Unix can be used on a large number of mainframes, servers, and workstations. If you would like to use a certified UNIX system on commodity hardware, Solaris 10 can be downloaded free of charge for non-commercial use.
Ubuntu is a free, supported debian/linux implementation of Unix. As such, you can do nearly anything that you can do in Unix in Ubuntu.
Currently, The Open Group owns the "Unix" trademark. No, Unix branded operating systems are proprietary and copyrighted. They are not free or open systems software. From its start until 1993, Unix distributions included all their source code. Programmers have made many free and open Unix-like operating systems, including Linux, NetBSD, FreeBSD, OpenBSD, Dragonfly BSD, Mach, OpenSolaris, etc.
In a sense it was free; in the early to mid-70s you could get a copy of Unix (without source code) from Bell Labs with only the cost of the postage for the materials.
Linux or Unix are open source and some are versions are free and others aren't. Unix is based off of Linux, and both have many different variations. One popular Unix system is Ubuntu
Unix and Linux
GNU is a recursive acronym for "GNU's not Unix!" This name was chosen because GNU's design is Unix-like, but differs from Unix by being free software and containing no Unix code.It could also mean Gujarat National University.
This includes the presence of a switch or option - in this case the 'a' option. Every command in Unix is free to interpret what they means differently as there is no universal meaning for this switch.
Because Unix hosting is free and an open source solution to hosting, it is a good solution to many problems faced by small business owners. You will get the same product and advantages as other hosting, but it is free!
One of the major advantages of unix based hosting is that unix is free, so the cost is not an issue. Another cost benefit is that several free applications are available for Unix based servers so the money that would have been allotted to this could be utilized elsewhere. Unix is also very efficient because less system resources are required which means less bandwidth and RAM are used. This results in a smoother and faster site. Many languages were developed using Unix as well. This means that there are more applications will be able to run on your site than if you had chosen another platform.