Operating system history, System architecture Platform overview; Linux origins, Philosophy, history, and distribution

First, Operating System History

Wikipedia search operating system

Operating System(English:Operating System,Abbreviations:OS) is the managementComputerHardwarewith theSoftwareof ResourcesComputer Programs, but also the core and cornerstone of computer systems.

Operating system features:

·  Process Management (processing Management)

·  Memory Management (Management)

·  filesystem (Filesystem)

·  network communication (Networking)

·  security mechanism (safety)

·  UI (Userinterface)

·  driver (Device drivers)

Computer system: I/O , memory, arithmetic, controller

Register:

Memory:

Hard disk:

First level cache, level two cache:

South Bridge: Peripheral devices connected, low speed

North Bridge: High-speed

Data bus and control bus:

  

Second, System Architecture Platform Overview

Arm

I386

x86_64

Third, Linux Origins, Philosophy, history, and distribution

Wikipedia Linux

1991 Year Linux 0.1

Idea: Open source, free

GUN

Gpl

Kernel version uname-r

Released release version

Debian

Suse

Redhat (centos,Fedora)

Ubuntu

GUI: Graphical user interface

GNOME KDE

CLI: Character Prompt interface

Command Prompt :

# root Uid=0

$ General user UID after

Command option Parameters

Two types of parameters : length

Su-l username

PASSWD Change Password

Password complexity requirements

This article is from "Ancient Cypress blog" blog, please be sure to keep this source http://444546012.blog.51cto.com/8578922/1548012

Operating system history, System architecture Platform overview; Linux origins, Philosophy, history, and distribution