Well-regulated Unix and Linux

Article Title: well-regulated Unix and Linux. Linux is a technology channel of the IT lab in China. Some basic categories, such as desktop applications, Linux system management, kernel research, embedded systems, and open source systems, may be a headache for the difference between Unix and Linux! I found and sorted out some information through google.
　
　 1. the biggest difference: Unix is a well-regulated system, while Linux is an open-source system.
　
2. technical differences
　
A) in Unix, the development target group is for special customers and platforms, while in Linux, development is completely open for all platforms.
　
B) Unix maintains consistency between different versions. they release standards as required by the customer. Linux versions are inconsistent, and there are no strict standards for tools, environments, and functions.
　
C) there are standard restrictions on developers in Unix, while those in Linux are free and unrestricted.
　
D) commands, tools, and utilities in Unix have very few version changes. Therefore, administrators can easily upgrade their skills, in a new version of the operating system, you do not need to use large subjects to test the original tools and applications. Commands, tools, and utilities in Linux may change over time.
　
　 3. hardware
　
A) Unix is a small part of hardware platform/architecture code, while Linux is designed to be as compatible with all platforms as much as possible and run on many architectures, most I/O devices and other extended devices are supported.
　
B) commercial Unix is usually customized for each system, resulting in a high original cost, but it is in the interest you need. For example:
　
HP-UX & Itanium m/c
　
Solaris => iSCSI and x86
　
AIX => Power Processor
　
Linux has a basic package, and you can install more packages for your system (in this case, Linux is closer to Windows than commercial Unix ).
　
C) 2
　
　 4. kernel
　
A) the Unix kernel cannot be freely obtained, and the Linux kernel can be freely obtained.
　
B) Unix patches are released only after high tests. Linux patches are not highly tested as Unix patches.
　
　　 5. Update and Bug
　
A) every operating system, including Unix and Linux, must be threatened by vulnerabilities and bugs. you must patch, fix, and upgrade the operating system.
　
However, Linux bugs tend to be eliminated in the early stages, so they have gone through incredible security tests in the world's open-source community.
　
B) never-changing equality and acceptance of opinions, allowing a developer to leverage experience and knowledge of all other developers around the world, resulting in faster and stronger software development, this makes the Linux operating system incredibly stable.