These are two different types of OS (Operating System).
Differences between Linux and Unix OS:
1. The average price of Unix all around the world is fairly expensive; while, Linux is even cheaper than Windows.
2. Unix OS are manufactured by companies such as Solaris (Oracle), AIX (IBM) & HP-UX Hewlett Packard, and even Apple; Linux was first programmed by Linus Torvalds.
3. Unix OS are mainly designed for mainframe computers, super commputers and devices of that sort; while, Linux can be used by everyone plus, it can be smoothly used on almost any electronic device, though now it is popular mainly on super computers.
4. Unix systems are much complex; Linux is quite user-friendly and it is developed by Open Source development.