macOS Catalina Installing RVM – Quick-Start Guide
You are Welcome! The Tutorial Shows You Step-by-Step How to Install Ruby Version Manager in Mac OS Catalina 10.15 BSD/Unix Desktop.
And RVM for Mac 10.15 is a Command-line Tool which allows you to easily Install, Manage, and Work with Multiple Ruby Environments (Interpreters to sets of Gems).
Finally, this guide includes detailed instructions about to Getting-Started to Manage Ruby Versions on Mac.
Open a Terminal Shell Emulator
Applications > Utilities > Terminal
(Press “Enter” to Execute Commands)