How to change active configuration all projects in eclipse?

Question

I have more than 50 projects in my eclipse work space. I would like to know if there is a way to change active configuration of all the projects with single setting instead of doing it for each project individually

Answer 1

"Ctrl+A" to select all projects in project explorer. Right click and select Build Configurations -> Set Active ->

This way you can change Active configuration of all projects in the workspace