Atom

• Install Atom
• Terminal: apm install script //installs script package for Atom
• Terminal: cd to the directory from where you want your script to run
• Terminal: open Atom with atom .
• Atom: write the test script
• Atom: run all with cmd+i; or select section and run
• Atom: stylesheet. Modify to change font size in script window.

more script options: https://atom.io/packages/script

Sublime

• in Sublime: in the script: cmd+b