Tasks
Exact, safe, task-first OS guides for when you need to do one thing now without losing accuracy or context.
Use these when you need one OS job done cleanly.
Task Guides are for practical work: create a user, repair file access, inspect listening ports, mount a drive, or check memory pressure. Each guide stays focused on safe sequencing, verification, and cross-links back into deeper learning.
Processes
Find which processes are consuming memory and decide whether the problem is one process, many processes, or overall system pressure.
Check whether a service is running, restarting, stopped, or unhealthy before you restart or kill anything.
Files and Storage
Find where disk space is actually being used and free space without deleting the wrong data.
Inspect an external disk first, then mount it deliberately without confusing the device, partition, filesystem, and mount point layers.
Users and Permissions
Fix access on a file or folder by checking ownership, current permissions, and the real user path before changing anything.
Add a user without over-granting privileges, then verify the account behaves the way you intended.
Networking and Remote Access
Check which ports are listening, which process owns them, and whether that actually matches the service you expect.
Separate DNS, reachability, routing, and service checks instead of calling everything a network problem.
Software and Packages
Install software in a repeatable way without bypassing trust, source, or dependency checks.
Uninstall software without leaving the system in a confused state or removing shared dependencies blindly.
Scripting and Automation
Write a small OS automation script that is readable, testable, and safe to run more than once.
Schedule a script or command to run automatically and verify that the scheduled job actually executes.