Linux Operating System Basics (i)

server operating System

Unix

Linux:gnu/linux

Windows

Linux History

Linux is Unix-like

Unix was born in 1969 Ken Tompson

Linux was born in 1991 Torvalds

Linux distributions

Slackware

Suse,open Suse

Red Hat

Rhel,centos,fedora

Debian

Ubuntu

Android

The philosophical thought of Linux

1. All Documents

2. Combine small programs to complete complex tasks

3. Avoid capturing user interfaces as much as possible

4. The configuration file is saved in plain text format

Terminal Terminal

Physical terminal

Virtual Terminal

Serial terminal

Pseudo Terminal

Graphics terminal

Linux Users

by UID to determine whether the user is the root user, the root user uid is 0

Root user (super User)

UID is 0   

Normal User

CENTOS6: Starting from 500

Centos7: Starting from 1000

Interactive interface

GUI Graphics User Interface graphical interface

Gnome

Kde

Xfce

CLI command Line Interface

Shell program: bash,csh,ksh,zsh

The shell is the user interface of the Linux system, which provides an interface for users to interact with the kernel, receiving commands entered by the user and sending it to the kernel for execution.

It is a command interpreter for Linux and a high-level programming language.

Linux commands

L

Get help

L

Date and time

L

Linux Operating System Basics (i)