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33 lines
453 B
33 lines
453 B
6 years ago
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package main
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import (
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"fmt"
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"os"
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)
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func printStrings(strings []string) {
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for _, str := range strings {
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fmt.Println(str)
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}
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}
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func main() {
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if len(os.Args) == 1 {
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printStrings(os.Environ())
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os.Exit(0)
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}
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exitCode := 0
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envVars := []string{}
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for _, key := range os.Args[1:] {
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val, present := os.LookupEnv(key)
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if present {
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envVars = append(envVars, val)
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} else {
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exitCode = 1
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}
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}
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printStrings(envVars)
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os.Exit(exitCode)
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}
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