1. Essentially different: Linux is open source and free to use; UNIX closed source code, commercial in nature.

2. Operating platform: Linux has strong compatibility; UNIX is weak in adaptability.

3. Open kernel: Linux kernel is open and can be modified freely; UNIX kernel is not public, limiting users.

4. System standard: UNIX follows SUS standard and is unified; There is no uniform standard for Linux, and there are great differences among distributions.

5. Driver problem: There are many different versions of UNIX drivers; Linux drivers are relatively unified.

6. Application software: Linux is compatible with UNIX software and supports various network protocols; UNIX application software is single.

7. Development history: Linux originated from UNIX and was born in1991; UNIX started at 1969.

8. Authorization: Linux adopts GPL authorization, allowing free dissemination and modification; UNIX authorization methods are various.

9. Performance: Linux performs well in the server field; UNIX is suitable for mainframes and high-end servers.

10. development trend: the market share of Linux is increasing, and UNIX is gradually declining, moving closer to Linux.