Intro to IntelliJ
https://www.tutorialspoint.com/intellij_idea/intellij_idea_introduction.htm
IntelliJ Keyboard Shortcuts
https://www.jetbrains.com/help/idea/mastering-keyboard-shortcuts.html
Intro to Eclipse:
https://www.csee.umbc.edu/courses/undergraduate/341/fall08/Lectures/Eclipse/intro-to-eclipse.pdf
Eclipse Keyboard Shortcuts:
https://javarevisited.blogspot.com/2018/07/top-30-eclipse-keyboard-shortcuts-java-programming.html
UNIX:
https://www.tutorialspoint.com/unix/unix-useful-commands.htm