Refresh Ubuntu 18.4

Question

I want to Uninstall everything from my system except the OS itself. In fact I want to factory reset my system.

Current version I am using is 18.4

Answer 1

The quick and easy way to have a factory reset is to reinstall the OS all together. It will take you 20 minutes if your computer is not too fast.

Resetting in another way, i.e. without replacing the OS, involves manual work, and might not be exactly possible at all.

• You might delete your account and recreate it to get a "pristine" account
• The only way to remove packages you installed yourself is to remember which these were, and remove/purge them. Even then, the system technically may not be byte-identical to a freshly installed system.

Actually, my recommendation to reinstall freshly very much coincides with the answer given here, where the question was to remove personal information. All other approaches may be cumbersome or uncertain.