Environment Variables Explained | FullStack Masterclass Terminal Course
Environment variables are named values that a shell or program can read while it runs. They are used for modes, ports and configuration, and they are also where secrets often enter an app without being hardcoded into source files.
In this FullStack Masterclass lesson, Andrew explains Environment Variables as part of the System Signals chapter.
You will learn:
Named values
PATH
Ports and modes
Secrets
Chapters:
00:00 Programs can read values from their environment
00:14 Name, value, scope and privacy
00:34 PATH is special, secrets are sensitive
00:53 Use harmless variables only
01:17 Configuration belongs outside source code
01:35 Practice with fake values
01:53 Environment is runtime context
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