How do I add Ruby to the PATH variable on Windows?

Question

I have Ruby installed, but I still need to add it to the PATH variable. I found something online for how to manually add it using the command line:

set PATH=         


        

Answer 1

For CLI, as noted elsewhere calling SET on the path variable only acts on the current window and closing it or restarting windows voids the change.

Example the transient Version selected as the answer:

set "PATH=%PATH%;C:\Ruby200-x64\bin"

To correctly set the path permanently in CLI use the path command:

PATH %PATH%;C:\Ruby200-x64\bin

This will persist between CMD windows and after reboots.