title: Chapter Linux Basics linux entry
categories:
- Linux
tags: - linux
abbrlink: 3791945740
date: 2019-08-05 15:16:47
Getting Started Chapter linux Linux Basics
2.1 Linux Introduction
- An operating system, free, open source, safe, efficient, stable, high concurrency processing tough.
- Founder: linus
- Mascot: penguin tux
- The main releases: Ubuntu, centOS, Redhat, Suse, Red Flag Linux
- Major operating systems: windows, linux, Ios, etc.
2.2 Linux and Unix relationship
Chapter Linux Basics VM and Linux systems installed
The installation and use qemu
3.1 Qumu installation
3.2 Create a virtual machine and start
sudo x86_64-softmmu/qemu-system-x86_64 -m 2048 -enable-kvm centos.img -cdrom ./linux-iso/CentOS-7-x86_64-Minimal-1810.iso
Chapter IV Linux Basics Linux directory structure
4.1 tree structure, in the top of the structure is the root directory /, create additional sub-directory under the directory
Classic: ** In the Linux world, everything is a file **
4.2 Directory Structure
/ bin common commands
/ sbin super administrator command
/ home storage of common user directory
/ root system administrator directory
/ lib dynamic library
/ lost + found is usually empty, store some system files after illegal shutdown
/ etc configuration files and subdirectories
/ usr user applications and file storage directory
/ boot boot linux core document
/ dev management device
/ media equipment directory
Do not operate the directory
/ proc system memory map
/ srv store some data to be extracted after the service starts
/ sys The file system is a 2.6 kernel emerging directory where you installed
/ tmp temporary files
/ mnt allows users to temporarily mount other systems
/ opt to install additional software host the placing of a directory, the default is empty
/ usr / local to another host to install additional software installation directory
/ var store things expanding, and it will often be used to modify directories in this directory, logs, etc.
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4.3 summarize
- linux directory is only one root directory
- linux directory to store the contents of each are planned
- linux manage our device in the form of documents, so everything is a file linux
- Storing the contents of each file directory under linux, have some knowledge