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Secure Your Infrastructure: Disk Analysis, fstab Mounts, and Connectivity Testing in Linux

Stepping into the world of cybersecurity requires more than just understanding threats; it demands a rock-solid foundation in the systems you are protecting. Linux is the backbone of the security world, and mastering its environment is non-negotiable. This guide highlights four hands-on labs from the LabEx Cybersecurity path that bridge the gap between basic navigation and professional system administration, giving you the control needed to secure any environment.

Disk Usage Analysis

Disk Usage Analysis

Difficulty: Beginner | Time: 15 minutes

In this lab, you will master advanced disk usage analysis techniques in Linux. You will learn how to find large files, analyze directory sizes, and identify space-consuming subdirectories using find, du, and sort commands.

Practice on LabEx → | Tutorial →

Block Devices and Partitions

Block Devices and Partitions

Difficulty: Beginner | Time: 20 minutes

In this lab, you will learn how to visualize attached storage hardware in Linux. You will use command-line tools to identify block devices, inspect disk partitions, and check storage sizes.

Practice on LabEx → | Tutorial →

Persistent Mounts with fstab

Persistent Mounts with fstab

Difficulty: Beginner | Time: 15 minutes

In this lab, you will learn how to configure persistent filesystem mounts using the /etc/fstab file in Linux, ensuring storage remains available after a system reboot.

Practice on LabEx → | Tutorial →

Testing Connectivity

Testing Connectivity

Difficulty: Beginner | Time: 15 minutes

In this lab, you will learn how to use the ping command to verify network connectivity, test reachability of remote hosts, and diagnose connection issues.

Practice on LabEx → | Tutorial →

Building a career in cybersecurity starts with these fundamental building blocks. By completing these four labs, you aren't just memorizing commands—you are developing the intuition of a system administrator and the scrutiny of a security analyst. Ready to take control of your Linux environment? Dive into these interactive exercises on LabEx and start building your expertise today.

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