33 lines
466 B
Go
33 lines
466 B
Go
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package whoami
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import(
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"os"
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"os/user"
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"flag"
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"fmt"
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"log"
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)
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func Run(args []string) {
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arg0 := args[0]
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args = args[1:]
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flagSet := flag.NewFlagSet(arg0, flag.ExitOnError)
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flagSet.Usage = func() {
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fmt.Fprintf(os.Stderr, "Usage of %s: %s\n", arg0, arg0)
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flagSet.PrintDefaults()
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}
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flagSet.Parse(args)
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if len(flagSet.Args())>0 {
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flagSet.Usage()
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os.Exit(1)
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}
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u, err := user.Current()
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if err != nil {
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log.Fatal(err)
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}
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fmt.Print(u.Username)
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}
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