0.5 Common Linux system versions

Before introducing common Linux systems, you first need to distinguish Linux system kernel Linux distribution suite system. Linux system kernel refers to a system core program maintained by Linus Torvalds that provides hardware abstraction layers, hard disk and file system control, and multitasker capabilities. T he Linux suite system is what we often say Linux operating system, which is Linux kernels and a variety of commonly used software. There are hundreds of Linux around the world, each with its own features and target audience, and you'll be able to pick the most popular versions from the user's perspective.

Note: The word Linux Distribution Suite System" will be replaced by Linux Distribution Suite System" in the remaining chapters of the Linux Book.

Red Hat Enterprise RedHatEnterpriseLinux RHEL

Red Hat is the world's largest open source technology RHEL is the most widely used Linux the world.

RHEL offer excellent performance and stability, as well as comprehensive technical support worldwide.

RHEL are also used in this book, Red Hat certification, and many production environments.

Community Enterprise Community Enterprise Operating System , CentOS

By RHEL system and publishing it to users for free Linux there is a wide range of users. CentOS is currently "edited" by Red Hat.

Fedora

Desktop System Suite released by Red Hat (not limited to desktop versions at this time).

Users can experience the latest technologies or tools for free, which will be RHEL system when they Fedora RHEL field" of the RHEL system.

If operators want to stay ahead of their technology at all times, they should pay more attention Linux systems and new features, and constantly change their learning direction.

openSUSE

A well-known Linux has a good global reputation and market share.

Gentoo

It is highly customizable and complex to operate, making it suitable for experienced personnel. Readers can try the system after they have finished studying the book.

Debian

Stability, security, free basic support, good support for a variety of hardware architectures, as well as nearly 100,000 different open source software, with high acceptance and usage abroad.

Ubuntu

It is an operating system Debian and is extremely compatible with new hardware.

Ubuntu Fedora excellent Linux and Ubuntu in the server space.

Most Linux China are now written around CentOS system, and most authors give a series of reasons for writing around CentOS but many of them are untenable and do CentOS system and the RHEL system. CentOS is a Linux system generated by the release of the program source code Linux command operation and service configuration method is RHEL removed a lot of paid service suite functionality, and does not provide any form of technical support, after the problem can only be solved by the operations staff themselves. A fter this analysis can basically be judged that the reason for CentOS is left - free! W hen people trumpeted the CentOS system as a banner of free, open source, and justice, I didn't know CentOS system had been "collected" by Red Hat as early 2014 and is now only strategically free. F urther, under the GNU GPL we can also use RHEL for free, or even modify its code to create derivatives. There is no difference in the degree of freedom of open source systems, let even less about ethical issues.

This book is based RHEL 7 systems, and its contents and experiments are fully used CentOS Fedora and more. T hat is, when you've finished reading this book, you can do it even if your production environment within your company deploys a CentOS system. What's more, the ISO material is basically consistent with the Red Hat RHCSA and RHCE exams, making it more suitable for Candidates preparing for Red Hat certification.

ISO mirror file ISO with book: https://www.linuxprobe.com/tools

In-depth review of RHCSA RHCE RHCA certification: https://www.linuxprobe.com/redhat-certificate