Linux Basics

This repository contains my study notes about Linux fundamentals, terminal commands, and file system navigation.

The goal is to document commands and concepts learned during my studies in Linux and cybersecurity.

Topics Covered

• Linux terminal basics
• File system navigation
• User privileges
• Basic system commands

Commands Examples

Show IP address

ip a

Show current directory

pwd

List files and directories

ls

Change directory

cd

Go back one directory

cd ..

Go to root directory

cd /

Show date and time

date

Clear terminal

clear

Quando não tem barra de rolagem(para ler com calma)

ls | more Ir apertando o enter, vai mostrando o diretoório aos poucos - Shift + c, para

Filtrar pela primeira letra

ls primeira letra + * Exemplo: ls a*

Filtrar pela primeira letra e a segunda

ls primeira letra + ?+ * Exemplo: ls g?o*

Criar arquivo

touch arquivo.txt

listando + de 1 arquivo

ls arquivo[1-3]*

Notes

Linux terminals are case sensitive, meaning uppercase and lowercase letters are treated differently.

Example: Arquivo.txt ≠ arquivo.txt

Author

Luan Savarese