How to Clear / Clean / Delete System Log, Cache and Outdated Backup in Apple Mac OS X?

System log files, application error crash reports, cache, iOS and iTune backup tend to build up from time to time which could possibly slow down Mac OS X (macOS). To remove system log files and application error crash reports from Mac OS, follow these steps.

Solution 1: Remove User Log Files

1. Open Finder and select Go to Folder in the Go menu.
2. Type in ~/Library/Logs and hit Enter to proceed to user log files folder.
3. Select individual log files, then right-click and select Move to Trash.
4. Go inside each sub-folders within the Logs folder and remove the system log files found there.
5. Restart Mac.

Solution 2: Remove Cache Files

1. Open Finder and select Go to Folder in the Go menu.
2. Type in ~/Library/Caches and hit En<h3>ter.
3. Delete the files and folders that are taking up the most space.
4. Now click on Go to Folder again.
5. Type in /Library/Caches and hit Enter.
6. Delete the folders that take up the most space.
7. Restart Mac.

Solution 3: Remove Old iTunes Library Backups

1. Open Finder and select Go to Folder in the Go menu.
2. Type in ~/Music/iTunes/Previous iTunes Libraries.
3. Delete those outdated iTunes Library backups.

Solution 4: Remove Old iOS Backups

1. Open Finder and select Go to Folder in the Go menu.
2. Type in ~/Library/Application Support/MobileSync/Backup/.
3. Delete those outdated iOS backups.

Solution 5: Remove iOS Software Updates

1. Open Finder and select Go to Folder in the Go menu.
2. Type in ~/Library/iTunes/iPad Software Updates for iPad or ~/Library/iTunes/iPhone Software Updates for iPhone.
3. Delete those outdated iOS software updates.

Solution 6: Empty out the Trash

1. Ctrl+click your Trash in the the Dock.
2. Select Empty Trash option.
3. Click Empty Trash.