Linux First day: Computer Basics and CentOS installation

The philosophical thought of Linux

Everything is a file (including hardware)
Small, single-use programs
Link programs to accomplish complex tasks together
Avoid confusing user interfaces
Configuration data is stored in text

Development interface Standard

ABI (Application Binary Interface)
Describes the underlying interface between the application and the OS;
API (Application Programming Interface)
Define the interface between the source code and the library
POSIX (Portable Operating System Interface)
A series of API standards defined by the IEEE on the operating system

Three types of storage networks

Das for direct-attached storage, poor manageability, poor scalability,
Nas for file servers, extensive support for operating systems, file systems
SAN for databases, high cost, complex installation, no own file system

Release Linux Download URL

Https://wiki.entos.org/download
Http://mirrors.aliun.com
Http://mirrors.sohu.com
Http://mirrors.163.com

Centos

Community Enterprise Operating System
Community Enterprise Operating System
From Red Hat Enterprise Linux

Linux First day: Computer Basics and CentOS installation