Welcome to the ninth installment of my Certification Series! While many of the certifications I’ve covered focus on networking or security specifically, none of those disciplines exist in a vacuum. Most of the systems we secure—and many of the tools we use to do so—run on Linux. That’s why I chose to earn the LPI Linux Essentials.

Overview of the LPI Linux Essentials

The Linux Essentials (currently the 010-160 exam) is an entry-level professional development certificate that validates a foundational understanding of the Linux operating system and the open-source philosophy.

The exam covers five main areas:

  1. The Linux Community and a Career in Open Source: History of Linux, major distributions (Debian, Red Hat, SUSE), and open-source licensing (GPL, BSD, Creative Commons).
  2. Finding Your Way on a Linux System: Basic CLI navigation, using help commands (man, info), and understanding the directory structure (FHS).
  3. The Power of the Command Line: File management, archiving (tar), and basic text processing using pipes and redirects.
  4. The Linux Operating System: Hardware identification, process management, and basic networking configuration.
  5. Security and File Permissions: Managing users/groups and setting file permissions (chmod/chown).

Why Get Linux Essentials?

In cybersecurity, Linux is not optional. Whether you are using Kali for penetration testing or hardening a web server, you must be comfortable at the command line.

  • Foundation for Cybersecurity: Almost all security tools (Nmap, Metasploit, Wireshark) have their roots in Linux.
  • The OS of the Cloud: Most cloud infrastructure (AWS, Azure, GCP) runs on Linux. Understanding the kernel and file system is vital for cloud security.
  • WGU Requirement: For those in the WGU Cybersecurity program, this is a core requirement that sets the stage for more advanced operating system courses.

Study Materials Used

Since this was my first “pure” Linux exam, I focused on resources that allowed me to “break things” in a safe environment.

  1. Cisco Networking Academy (Linux Essentials): A free, comprehensive course that includes a built-in Linux terminal. This is arguably the best starting point for the exam.
  2. Jason Dion’s Linux Essentials Course (Udemy): Dion provides a great overview of the exam objectives and includes a practice exam that mimics the real testing environment.
  3. Shawn Powers (YouTube): His “Linux Essentials” series is fantastic. He has a way of making the command line feel approachable and even fun.
  4. Hands-on Practice (VirtualBox): I installed Ubuntu and Rocky Linux in VMs and forced myself to perform all file management tasks via the terminal instead of the GUI.

My Study Strategy

The key to Linux is muscle memory.

  • Live in the Terminal: Don’t just read about ls -la or grep; run them. Try to chain commands together with pipes (e.g., cat file.txt | grep "error" | wc -l).
  • Understand Permissions: You must understand the numeric (755) and symbolic (rwxr-xr-x) representations of file permissions. This is a recurring theme on the exam and in real-world security.
  • Distribution Differences: Know the basics of how Debian-based (Apt) systems differ from Red Hat-based (Yum/DNF) systems.

Exam Day and Difficulty

The exam is straightforward if you have spent time at the command line. It focuses on the “essentials,” meaning you won’t be asked to perform complex kernel tuning, but you will be expected to know your way around a shell.

Difficulty Rating: 4/10. It’s a great introductory cert that provides a huge ROI in terms of practical knowledge.

Earning Linux Essentials felt like gaining a superpower. It removed the “mystery” of the black-and-white terminal and turned it into my most powerful tool for automation and security analysis.

Up next in the Certification Series: The CompTIA Project+.