I installed the community version, address: https://download.jetbrains.com/idea/ideaIC-2020.2.2.tar.gz
click to go directly
to find a directory by yourself, unzip
tar -xzvf ideaIC-2020.2.2.tar.gz
For example, mine is like this:
Then enter this directory:
a box will pop up to accept the privacy policy of others.
OK, the installation is complete, I use the community version, so there is no need to enter the registration code or something.