Summary
In this chapter, you took your first steps into the command-line world. You learned how to navigate the filesystem, manage files and directories, understand permissions, and use powerful text manipulation tools. You also explored more advanced concepts such as shell scripting and aliases. The command line proved to be a deep and rewarding tool; what you have learned here was just the beginning. Don’t be afraid to continue experimenting and exploring further.
The next chapter will introduce the essentials of network security, from understanding what’s running on your system that could expose you to threats to using a firewall to block potential attackers.
