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32 lines
453 B
32 lines
453 B
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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