Reading and Writing Environment Variables in Go
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An environment variable is a way to supply dynamic configuration information to programs at runtime. Environment variables are often used to make the same program work in different environments like Local, QA, or Production. Get, Set, Unset, and Expand environment variables in Go The following program demonstrates how to work with environment variables in Go. It makes use of the following functions provided by the os package: os.Setenv(key, value): Set an environment variable.
