What are environment variables How do they work



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00:00 TOPICS
01:03 What are Environment Variables
04:35 How Environment Variables work
08:56 List all env variables (windows and mac os)
10:43 Print specific env variables
12:27 Set and Unset temporary env variables
15:38 Set Permanent env variables
24:07 List of common env variables
24:43 Good to know Facts
29:00 Do You Know

var=value
key=value

An environment variable is made up of a name-value pair
At runtime, the reference to the environment variable name is replaced with its current value

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