Installing & using Wolfram Engine on Windows and Mac through command line​
​by Alec Graves
These video tutorials cover how to get started using WL in the command line (optionally for free using Wolfram Engine). There are two videos: one for Windows and one for Mac.
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If you do not have Mathematica / Wolfram Desktop installed, you will need to download Wolfram Engine.
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If you already have Wolfram Desktop / Mathematica, you can simply install wolframscript.

Windows Tutorial

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Mac Tutorial

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