1-1 01-Course Arrangement

1-2 02-Inspirational formula and python experience

2-1 03-What is an operating system

2-2 04-Mainstream operating systems in different fields-01-Desktop operating systems

2-3 05-Mainstream operating systems in different fields-02-Server operating systems

2-4 06-Mainstream operating systems in different fields-03-Embedded operating systems

2-5 07-Introduction to virtual machines

2-6 08-A brief history of operating system development

2-7 09-Linux kernel version and distribution version

2-8 10-File directory structure under Linux system

2-9 11-Ubuntu system directory structure demonstration and introduction

2-10 12-Basic use of Ubuntu graphical interface

3-1 13-Linux Command-01-Clear Learning Goals

3-2 14-Linux Command-02-Enlarge or reduce the font of the terminal window

3-3 15-Linux Command-03-Clear the operating effects of 6 common terminal commands

3-4 16-Linux commands-04-6 simple drills on common terminal commands

3-5 17-Linux Command-05-Terminal Command Format

3-6 18-Linux Command-06-View terminal command help information

4-1 19-File and directory commands-01-Clear command classification and learning objectives

4-2 20-File and directory commands-02-Sharing auto-completion and command selection skills

4-3 21-File and directory commands-03-View hidden files and return to the previous directory

4-4 22-File and Directory Commands-04-Listing and File Size Options for ls

4-5 23-File and directory commands-05-Combined use of ls and wildcards

4-6 24-File and directory commands-06-Wildcard character group

4-7 25-File and directory commands-07-Common parameters of cd command

4-8 26-File and directory commands-08-Relative paths and absolute paths

5-1 09-Extensions to touch and mkdir commands

5-2 10-Extensions to the rm command

5-3 11-Goal determination and graphical interface demonstration

5-4 12-tree View the directory structure in a tree diagram

5-5 cp command to copy files

5-6 cp command -i option prompt before overwriting

5-7 cp command -r option to copy directory

5-8 mv command moves files or directories

5-9 mv command to rename files or directories

5-10 Basic usage and comparison of cat and more

5-11 The -b and -n options of the cat command output line numbers

5-12 grep to find file contents

5-13 grep pattern search at the beginning/end of the line

5-14 echo and redirection

5-15 The concept and basic use of pipelines

6-1 Shut down and restart

6-2 The concept of network card and IP address

6-3 Introduction to the functions of ifconfig and ping

6-4 ifconfig queries network card information

6-5 ping test network connection

6-6 An introduction to how SSH works

6-7 The concept of domain name and port number

6-8 Introduction to ssh command format and determination of drill goals

6-9 Mac computer uses ssh to connect to ubuntu

6-10 PuTTY installation and exit login

6-11 Installation of XShell - free and setting language

6-12 scp function and command format

6-13 Demo of scp in Mac terminal

6-14 FileZilla file transfer under Windows

6-15 Determine the target/understand the .ssh directory

6-16 Password-free login setup steps

6-17 How password-free login works

6-18 Configure an alias for a remote computer

7-1 learning target

7-2 Basic concepts of users/permissions/groups

7-3 Introduction to ls -l output information

7-4 Extension of the meaning of ls -l hard link number

7-5 chmod changes file permissions

7-6 chmod changes directory permissions

7-7 Super user introduction

8-1 Add group/delete group/confirm group information

8-2 Group exercise goals determined

8-3 Walkthrough for chgrp to modify the group to which a directory belongs

9-1 Create new users useradd and passwd

9-2 The role of the m option and deleting user userdel

9-3 id view UID and GID and introduction to passwd file

9-4 who和whoami

9-5 usermod sets primary and additional groups

9-6 usermod specifies user login shell

9-7 which view command location

9-8 su switches users

9-9 Introduction to permission commands and walkthrough of chown/chgrp

9-10 Introduction to numerical representation of chmod

9-11 chmod walkthrough -R recursively changes directory permissions

10-1 learning target

10-2 Date and cal check system time

10-3 df and du check disk and directory space usage

10-4 Introduction to process concept

10-5 Basic use of ps command

10-6 Basic usage of top command

10-7 Basic usage of kill command

11-1 Learning objectives and basic use of find command

11-2 Introduction to the concept of file soft links

11-3 Determination of drill steps for file soft links

11-4 Walkthrough implementation of file soft links

11-5 File hard link walkthrough

11-6 Introduction to how file soft and hard links work

12-1 Introduction to tar package and command format introduction

12-2 Packing and unpacking walkthrough

12-3 Introduction and walkthrough of gzip compression and decompression

12-4 Introduction and walkthrough of bzip2 compression and decompression

13-1 Introduction to apt and command format introduction

13-2 apt software installation walkthrough

13-3 Set up software source

14-1 The purpose of learning vi

14-2 vi and vim and the characteristics of vi

14-3 Open or create a new file

14-4 Open the file and define the specified line

14-5 Delete swap file

14-6 Responsibilities and switching methods

14-7 Work mode switching drill

14-8 Learning roadmap

14-9 Direction and intraline movement

14-10 Line jump and page up and down

14-11 Paragraph switching and bracket switching

14-12 Use markers to return to previously edited code locations

14-13 Three ways to select text

14-14 Introduction to undo and redo commands

14-15 Delete command walkthrough

14-16 Undo and Undo

14-17 Copy and paste walkthrough

14-18 The contents of the system clipboard cannot be pasted using p

14-19 Replace command

14-20 Indentation and repetition

14-21 Find a string or word

14-22 Global replacement

14-23 Replace viewable area

14-24 Confirm replacement

14-25 6 commands to enter edit mode

14-26 Use with numbers

14-27 Use visual blocks to add comments to multiple lines of code

14-28 Last line command expansion

14-29 w command phased backup code

14-30 Split screen command walkthrough