Linux Operating System: Effortless explanation about security administration and strategies behind penetration testing

If yes, then keep reading!
The term "Linux" refers to a computer operating system. Linux usually refers to the kernel, or core, which comes with an operating system. Linux-based systems are used in everything from smartphones to web servers.
Linux is a free, open-source operating system. The first version of Linux was created in 1991 by Linus Torvalds as a non-profit project, but it has been commercial since then. It has become more popular due to its ability to be used in various applications and functions. Linux is used in just about anything from personal computers (PCs) to supercomputers.
This book covers
Virtual Machine
How Securing Your Accounts
Start Using Firewalls for Secure Servers
Ensuring Secure Server
Encrypting Technology Methods
Tools to Crack Password Protected Files
Access Control Listing
Kali Linux Installation and Set-Up

And much more!
Linux is different from other types of operating systems because it contains no proprietary software or hardware drivers. This means that everything inside the Linux system is open-source, freely available to the public for study and modification, allowing many users worldwide to modify and create their own customized versions of Linux. Linux is not limited to just desktop use; it also has been used in servers and industrial control applications.
Linux benefits the user by being open-source software that anyone can modify and learn from. Linux makes it easy for an average user to see how the code runs so they can see what parts are important or how things work together. With Linux, you can learn from the source code, and just by looking at it, you can figure out what is happening.