IntelliJ IDEA: How to restore default settings [Ubuntu]

Recently my IDE started to act weird. There were issues like I can't use the key board short cuts (ie: can't use at least to keys at once). So the IDE did almost act like the vi editor ;)

Anyhow I did solve this issue by restoring default IDE UI settings.

You can easily do it by deleting the current configurations by running the following commands.

rm ~/.IntelliJIdeaXX/config        (lets you reconfigure user-specific settings.)

rm ~/.IntelliJIdeaXX/system        (lets you reconfigure IntelliJ IDEA data caches.)