CATEGORY
Linux
Command-line work, filesystems, permissions, services, processes, and connectivity.
LESSONS
Choose a lesson
Open Learn, then continue with Practice and Prove.
Beginner
Install a Linux Lab
Linux Fundamentals
Open lessonBeginner
Navigate the Linux Command Line
Linux Fundamentals
Open lessonBeginner
Find Help with Man Pages
Linux Fundamentals
Open lessonBeginner
Work with Text Streams
Linux Fundamentals
Open lessonBeginner
Package Management with APT
Linux Fundamentals
Open lessonBeginner
Environment Variables and Shell Startup
Linux Fundamentals
Open lessonBeginner
Linux Filesystem Hierarchy
Linux Filesystems
Open lessonBeginner
Create Copy Move and Delete Files
Linux Filesystems
Open lessonBeginner
Links Archives and Disk Usage
Linux Filesystems
Open lessonBeginner
Search Files and Content
Linux Filesystems
Open lessonIntermediate
Mount Filesystems and Block Devices
Linux Filesystems
Open lessonIntermediate
Monitor Disk Space and Inodes
Linux Filesystems
Open lessonBeginner
Linux Users and Groups
Linux Users and Permissions
Open lessonBeginner
Linux Permissions and Ownership
Linux Users and Permissions
Open lessonBeginner
Sudo and Least Privilege
Linux Users and Permissions
Open lessonIntermediate
Manage Passwords and Account Expiration
Linux Users and Permissions
Open lessonIntermediate
Special Permissions and ACLs
Linux Users and Permissions
Open lessonBeginner
Linux Processes and Signals
Linux Processes and Services
Open lessonBeginner
Systemd Services
Linux Processes and Services
Open lessonBeginner
Linux Logs and Journals
Linux Processes and Services
Open lessonIntermediate
Schedule Jobs with Cron and Systemd Timers
Linux Processes and Services
Open lessonIntermediate
Monitor CPU Memory and Load
Linux Processes and Services
Open lessonIntermediate
Linux Boot Process and Targets
Linux Processes and Services
Open lessonBeginner
Inspect Linux Network Configuration
Linux Networking
Open lessonBeginner
Test Linux Connectivity
Linux Networking
Open lessonIntermediate
DNS and Name Resolution on Linux
Linux Networking
Open lessonIntermediate
Inspect Ports and Sockets
Linux Networking
Open lesson