| Tool/Command | Type | Purpose |
|---|---|---|
| Disk Utility | GUI | Partition, format, and repair disks |
| Activity Monitor | GUI | View CPU, memory, disk, and network usage |
| System Information | GUI | Detailed hardware and software specs |
| Console | GUI | View system logs and crash reports |
| Command | Purpose |
|---|---|
| top | Live system resource monitor |
| df -h | Show disk usage in human-readable format |
| sudo shutdown -r now | Restart system immediately |
| sudo dscacheutil -flushcache | Flush DNS cache |
| sudo killall -HUP mDNSResponder | Restart DNS service |
| Tool/Command | Type | Purpose |
|---|---|---|
| Finder > Go to Folder > ~/Library/Caches | GUI | Manually clear user cache files |
| AppCleaner | GUI | Remove apps and associated files cleanly |
| Terminal: `sudo rm -rf ~/Library/Caches/*` | CLI | Delete user cache via terminal |
| Terminal: `purge` | CLI | Clear inactive memory (older macOS) |
| Tool/Command | Type | Purpose |
|---|---|---|
| Disk Utility > First Aid | GUI | Check and repair disk errors |
| Safe Mode | Boot Option | Loads minimal drivers and runs diagnostics |
| Recovery Mode (⌘+R) | Boot Option | Access reinstall, restore, and disk tools |
| Terminal: `sudo fsck -fy` | CLI | Force file system check and repair |