Linux's first meeting date ~ ~

Source: Internet
Author: User

Linux system configuration and service management

Application, server application-openstack
Operating system Three necessary levels for-------------system applications
Hardware

First, the history of Gnu/linux
1. The father of free software, Richard Stallman proposed GNU (not Unix) the father of Open source (opensource, open Source), GPL protocol
2. Linnastovaz, inventor of the Linux kernel
Ii. Introduction of Linux distribution
1.RHEL
2.CentOS
3.Ubuntu, main do graphics desktop Linux
4.SUSE Small Lizard, Chameleon
5.Debian
6.ORACLE

===========================================================
Third, Linux related certification introduction
RHCSA system Administrator
RHCE System Engineer
RHCA System Architect
RHCSS system security Specialist
Iv. Deployment of Linux Systems
Be sure to adjust the boot entry, BIOS, automatically select the hard drive, the optical drive and the network boot
1. Boot
2.bios Adjusting Startup Items
3. Select Install or repair
4. Select the installation language
5. Installation type: Minimal installation and GUI installation, must be compatible with development tools

Computers are made up of different types of files

①文件管理方式、目录结构:home,存储普通用户的家目录,保存每个用户单独的文件                          bin,普通用户使用的命令。                          sbin,管理员使用的命令                          dev,设备文件(硬件)                          root,管理员root的home                          usr,系统文件,相当于C:Windows                          etc,配置文件                          proc,虚拟文件系统,存放的系统映射的文件,系统内核调优使用                          tmp,临时文件                          var,存放变化文件,比如数据库,日志,邮件。                          media,移动设备默认挂载点,(媒体)                          mnt,手工挂载设备的挂载点                          boot,启动文件,引导文件夹,linux核心

Five, the first knowledge of the shell
Linux contains hardware:
System: Kernel: System and hardware communication
Shell: Communication between user and system or application
Applications: provision, use of services

    shell是系统单用户界面,提供了用户与内核进行交互操作的一种接口,他接受用户输入的命令并把他送入内核去执行。实际上shell是一个命令解释器,他解释由用户输入的命令并且把他们送到内核。    bash shell 是红帽系统的主要使用shell,还有其他版本的shell    shell功能简介        文件管理        权限管理        磁盘管理        用户管理        软件管理        网络管理shell命令   命令+选项+参数~代表root的家目录

Linux's first meeting date ~ ~

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