The default-java folder is a symbolic link to the actual location of the JDK install on Ubuntu. When you reference the JDK install location in applications or in environment variables such as ...
I've been using Ubuntu for decades. Whether you're new to the OS or returning to it after a while, these are the essential apps, hidden settings, and useful tweaks you need to know about.
With Amazon support ending, I jailbroke my outdated Kindle to install KOReader. Here are the risks, and an alternative.