28 lines
699 B
Go
28 lines
699 B
Go
package main // Use the `os` package to list, set, and get
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// environment variables.
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import (
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"os"
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"fmt"
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"strings"
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)
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func main() {
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for _, e := range os.Environ() { // `Environ` returns a slice of strings in the form
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pair := strings.Split(e, "=") // `KEY=value`.
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fmt.Println(pair[0])
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}
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fmt.Println()
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os.Setenv("FOO", "bar") // `Setenv` sets a given key, value pair.
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fmt.Println(os.Getenv("FOO")) // `Getenv` returns the value at key, or an empty
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} // string if the key isn't present.
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/*
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$ go run env.go
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HOME
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PATH
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PWD
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...
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bar
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*/
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