You are probably referring to the fact that it is OPEN SOURCE, meaning that it is free and easily attainable. Source code is what programmers use to write programs. Open in this case means that anyone is free to examine the source code, modify the program, and even distribute their modifications, providing the license terms are followed. The terms usually include things such as keeping the GNU license intact with the distribution, and making any modified source code available under the same terms as the original program.
LINUX and Unix OS is open-source operating system.....! but Windows version OS is not the open-source operating system....!
Unix and Linux
Unix is an multitasking, multi-user computer operating system developed by AT&T. It is currently owned by The Open Group. The Unix operating system was originally intended to be used for developing software.
Linux is an open system, Unix is not.
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.
If I understand your question....vague as it is....yes, the Unix OS source code is free and open source.
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
There are different types of operating systems. The most popular ones are Microsoft Windows and Linux which is an open- source operating system.
OpenBSD is a free an open-source Unix-like operating system, with a primary focus on security.
There are several open-source operating systems, most of which appear to be clones of Unix. Examples include FreeBSD, Linux, Minix.
No, HP-UX is the commercial distribution of Unix from HP. It is proprietary and not open source.
Android is classified as a Unix based, open-source mobile operating system for phones and tablets.