0x00-shell_basics

shell basics

Intro

In this session, we will introduce shell scripriting and have a look at the most basic scripting commands. Hang tight.

Resources

1. What is the shell?
2. Navigation
3. Looking around
4. A guided tour
5. Manipulating files
6. Working with commands
7. Reading man pages
8. Keyboard shortcuts
9. LTS
10. Shebang

Man or help

• cd
• ls
• pwd
• less
• file
• ln
• cp
• mv
• rm
• mkdir
• type
• which
• help
• man

Learning objectives

By the end of this project, you should be able to explain to anyone Without the help of google the following concepts

General Objectives

• What does RTFM mean?
• What is shebang?

What is the shell?

• What is the shell
• What is the difference between a terminal and a shell
• What is the shell prompt
• How to use the history (the basics)

Navigation

• What do the commands or built-ins cd, pwd, ls do
• How to navigate the filesystem What are the . and .. directories
• What is the working directory, how to print it and how to change it
• What is the root directory
• What is the home directory, and how to go there
• What is the difference between the root directory and the home directory of the user root
• What are the characteristics of hidden files and how to list them
• What does the command cd - do

Looking around

• What do the commands ls, less, file do
• How do you use options and arguments with commands
• Understand the ls long format and how to display it
• A Guided Tour
• What does the ln command do
• What do you find in the most common/important directories
• What is a symbolic link
• What is a hard link
• What is the difference between a hard link and a symbolic link

Manipulating files

• What do the commands cp, mv, rm, mkdir do
• What are wildcards and how do they work
• How to use wildcards

Working with commands

• What do type, which, help, man commands do
• What are the different kinds of commands
• What is an alias
• When do you use the command help instead of man

Reading man pages

• How to read a man page
• What are man page sections
• What are the section numbers for User commands, System calls and Library functions

Keboard shortcuts for bash

• Common shortcuts for Bash

Quizes

Quiz