1. Everything is a file
In Linux, almost everything is treated like a file — not just text documents, but also devices, settings, and processes. This makes it easier to manage and understand how the system works.
2. Linux is case-sensitive
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File.txt and file.txt are two different files.
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Always be careful with uppercase and lowercase letters, especially when typing commands or file names.
3. Use the terminal (command line)
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The terminal is powerful — it gives you full control over your system.
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Many tasks are faster or only possible through commands, especially in systems like Kali Linux.
4. Don’t log in as root (superuser) for everything
5. Learn basic commands
Commands like ls, cd, cp, mv, rm, mkdir, and man are essential. Knowing them helps you:
6. Respect file permissions
Files and directories have permissions that control who can read, write, or execute them. Use commands like:
This helps protect your system from accidental or unauthorized changes.
7. Install software through the package manager
Instead of downloading random files, use your system's package manager (like apt in Debian-based systems) to safely install software:
sudo apt update
sudo apt install program-name
8. Keep your system updated
sudo apt update && sudo apt upgrade
9. Don’t run commands you don’t understand
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Always double-check commands you find online, especially if they use sudo or rm.
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A small mistake can delete important files or crash your system.
10. Practice safe experimentation
