Linux user. Not at all familiar with Ruby but I watched a LinkedIn Learning Video and thought it would be good to try out.

My system:

 OS: Ubuntu 18.04 bionic
 Kernel: x86_64 Linux 4.15.0-111-generic
 Uptime: 1h 3m
 Packages: 3230
 Shell: bash 4.4.20
 Resolution: 2560x1080
 DE: XFCE
 WM: Xfwm4
 WM Theme: Flat-Remix-GTK-Blue-Darkest
 GTK Theme: Numix [GTK2]
 Icon Theme: Numix
 Font: Noto Sans Bold 10
 CPU: Intel Core i5-4460 @ 4x 3.4GHz [27.8°C]
 GPU: GeForce GTX 1050 Ti
 RAM: 3339MiB / 15981MiB