Every Operating System (without no exception for Ubuntu) usually create user activity log that log in at the time, some log that are often found are recent used document, the presence of recently used document log sometimes makes people uncomfortable, they afraid if their friend know what they just did using their computer, it's about privacy.
You can perform many various ways to make Ubuntu does not showing any recently used document, here the easiest and fastest way to do it without installing extra application :
The list of recent used document is save in <home directory>
- rm ~/.local/share/recently-used.xbel
- touch ~/.local/share/recently-used.xbel
- sudo chattr +i ~/.local/share/recently-used.xbel
- sudo chattr -i ~/.local/share/recently-used.xbel
- Activity Journal.
- Ubuntu Tweak.
- Activity Log Manager.