Can't get Eclipse to work under ubuntu

[Bitbucket]

I'm having trouble getting eclipse to recognize wpilib and networktables under ubuntu. I was successful installing eclipse and the support files under Windows 10, but when I follow the procedure to install on ubuntu I get the following error when eclipse starts:
Unable to install tools: Exception occurred executing command line...see Console for details
install cpp
install java
install tools

When I create a simple project that creates Robot.java, eclipse indicates that it cannot find the edu... jar files, and indeed I can't find them on the disk either. I think I followed all the instructions for installation.

This is my first year as a mentor and my goal is to try the FRC Simlulation software so I can learn more about programming the robot and be able to help students.

Can anyone offer suggests as to where I might have gone off track?

Thanks
Bob