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The common open source operating systems

2021-10-09

Open source means that the source code of the system is open to users and can be used, compiled and redistributed in accordance with the open source protocol (GNU). On the premise of complying with the GNU agreement, anyone can use it for free and control the operation mode of the software at will. The most famous open source operating system is Linux.

Compared with non open source operating systems, such as windows and MAC, open source operating systems are characterized by open source code and free customization, but there will be many unpredictable situations and maintenance problems due to the technical level of users, and many hardware and software manufacturers do not support open source software. Therefore, there are great difficulties in driving and software source, which requires individual users to choose the system according to their actual situation, which is also the main reason why it is difficult for individuals to use the open source operating system.

Open source means that the source code of the system is open to users and can be used, compiled and redistributed in accordance with the open source protocol (GNU). On the premise of complying with the GNU agreement, anyone can use it for free and control the operation mode of the software at will. The most famous open source operating system is Linux.

Compared with non open source operating systems, such as windows and MAC, open source operating systems are characterized by open source code and free customization, but there will be many unpredictable situations and maintenance problems due to the technical level of users, and many hardware and software manufacturers do not support open source software. Therefore, there are great difficulties in driving and software source, which requires individual users to choose the system according to their actual situation, which is also the main reason why it is difficult for individuals to use the open source operating system.

1) Linux kernel

The Linux kernel was born in 1991. At present, it has more than 15 million lines of code, worth tens of billions of dollars. The most popular operating system distributions launched with it as the core include RedHat, SUSE, Ubuntu, Android, CentOS, Debian, etc., about hundreds of kinds. Unless otherwise specified, these distributions are collectively referred to as the Linux operating system.

Linux operating system is open source, free, stable and reliable, with few viruses and high performance. As a platform software, it is widely used in the cloud and data center. At present, all cloud centers except Microsoft adopt Linux operating system. CentOS is a clone of RedHat. It is widely used. It has rich information and community popularity on the Internet. It has been acquired by red hat.

2)FreeBSD

FreeBSD is a free and open source operating system developed by the University of California, Berkeley. It is known as the most stable, efficient, secure and copyright restricted operating system in the world. Other companies or individuals can download the source code and modify it without open source. For example, some network equipment manufacturers modify the source code and integrate it into their products. It is not illegal for the modified code not to open source, which is different from the Linux operating system.

3) Illumos kernel

After Oracle acquired sun, it closed the open Solaris open source project and launched the closed source Solaris 11 operating system and a simplified version of Solaris 11 express. Solaris 11 can be downloaded from the official website. If it is commercially available, you need to buy services. Individuals and laboratories can use it free of charge.

Almost all the original people of OpenSolaris left Oracle and joined various manufacturers with illumos as the core. Many open source versions were released at one time, such as NAPP it to go, nexentastor, omnios, smartos, stormos, illumian and openindiana, which can be applied to background servers, desktop computers, storage, embedded and other fields. These distributions all take illumos as the core, which is similar to various Linux distributions, such as red hat, ubantu, Debian and other Linux operating system distributions all take Linux as the core.


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