# 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.