Run the Code in a Notebook—Wolfram Language Documentation
There Was a Time before Mathematica…—Stephen Wolfram Writings
Wolfram Support Quick Answers: How do I run the Wolfram Language kernel?
wolfram mathematica - Calling a command line program - Stack Overflow
Introduction to Wolfram Mathematica – Clounce.com
Launching the Wolfram Open Cloud: Open Access to the Wolfram Language—Stephen Wolfram Writings
Launching
Run the Code in a Notebook—Wolfram Language Documentation
In Arrival (2016), Wolfram Mathematica is used by the scientists for multiple purposes multiple times in the movie, and when the code itself is visible it actually performs what is being shown.
Mathematica
How to Get Mathematica
Wolfram Mathematica Online: Bring Mathematica to Life in the Cloud
Running Mathematica without the Notebook interface
command line - How to run Mathematica as a .m file - Mathematica Stack Exchange
WolframScript: Run Your Code from Anywhere—Wolfram Blog