Initial Core 2 study project

labs/OS-3-admin-tools-lab.md

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+# Lab OS-3: Administrative Tool Matching
+
+Domain:
+- 1.0 Operating Systems
+
+Works on:
+- Windows
+- Linux comparison practice
+
+Does not require:
+- macOS
+
+## Goal
+
+Practice opening the right tool for the right troubleshooting symptom.
+
+## Windows Steps
+
+Run:
+
+```powershell
+taskmgr
+eventvwr.msc
+devmgmt.msc
+diskmgmt.msc
+services.msc
+resmon
+perfmon
+taskschd.msc
+```
+
+Optional, if supported:
+
+```powershell
+lusrmgr.msc
+```
+
+Record the best tool:
+- App is frozen:
+- Service failed to start:
+- USB device has driver error:
+- Need to assign drive letter:
+- Need live disk activity:
+- Need performance counters over time:
+- Need a script to run every day:
+- Need to check local group membership:
+
+## Linux Comparison Steps
+
+Run:
+
+```bash
+ps aux
+top
+systemctl status
+journalctl -p err
+lsblk
+```
+
+Record:
+- Command for running processes:
+- Command for live resource usage:
+- Command for service status:
+- Command for error logs:
+- Command for disks/partitions:
+
+## What You Should Learn
+
+- Event Viewer is for logs.
+- Device Manager is for hardware and drivers.
+- Services is for background services.
+- Disk Management is for partitions, volumes, and drive letters.
+- Resource Monitor shows live resource usage.
+- Performance Monitor tracks counters over time.
+- Task Scheduler automates tasks.
+