What operating system is centos?

centos, also known as "community enterprise operating system", is a free, open source, and redistributable open source operating system; it is a recompiled version of Red Hat Enterprise Linux, the leader in enterprise Linux distributions, and can be used Build an enterprise-level Linux system environment.

#The operating environment of this tutorial: centos7 system, thinkpad t480 computer.

CentOS is the abbreviation of Community Enterprise Operating System, also called community enterprise operating system.

CentOS Linux distribution is a stable, predictable, manageable and reproducible platform. It is a recompilation of Red Hat Enterprise Linux (hereinafter referred to as RHEL), the leader in enterprise Linux distributions. version (it is a re-released version), and many known bugs have been corrected on the basis of RHEL. Compared with other Linux distributions, its stability is trustworthy.

CentOS is free. You can use it to build an enterprise-level Linux system environment just like RHEL, but you do not need to pay any fees to RedHat. CentOS technical support is mainly provided through the community's official mailing list, forums and chat rooms.

Each version of CentOS is supported (via security updates) for ten years, with new versions of CentOS released approximately every two years. Each version of CentOS is updated regularly (about every six months) to support new hardware. In this way, a secure, low-maintenance, stable, highly predictable, and highly repeatable Linux environment is established.

System features:

1. CentOS can be understood as the community version of the Red Hat AS series. It is completely improved and released on Red Hat AS. Various operations and uses are no different from RHEL.

2. CentOS is completely free, and there is no problem that RED HAT AS requires a serial number.

3. CentOS’s unique yum command supports online upgrades, which can update the system instantly. Unlike RHEL, which requires spending money to purchase support services.

4. CentOS has fixed many RHEL bugs.

5. CentOS version description: CentOS3.1 is equivalent to RED HAT AS3 Update1 CentOS3.4 is equivalent to RED HAT AS3 Update4 CentOS4.0 is equivalent to RED HAT AS4.

Extended information: The relationship between CentOS and RHEL

RHEL has two methods when it is released. One is a binary distribution method, and the other is a source code distribution method. Regardless of the distribution method, it can be obtained and redistributed for free. But if you use online upgrades (including patches) or consulting services, you must pay.

RHEL has always provided source code distribution. CentOS recompiles the source code released by RHEL to form a usable binary version. Since the source code of LINUX is GNU, it is legal to obtain the source code of RHEL and compile it into a new binary.

CentOS can get all the features of RHEL, even better software. However, CentOS does not provide commercial support to users, and of course it does not bear any commercial responsibility. If you are moving your RHEL to CentOS because you don't want to pay for RHEL upgrades.

Recommended: "centos usage tutorial"

The above is the detailed content of What operating system is centos?. For more information, please follow other related articles on the PHP Chinese website!