[Go] Basic example of using commandline arguments

Flags.go

package main

import (
  // For printing
  Fmt "fmt"
  // For arguments parsing
  Flag "flag"
)

// Defines a flag for the commandline. Refers to the doc for details:
//   https://golang.org/pkg/flag/
var Name = Flag.String("name", "guest", "Name to greet")
var GreetB = Flag.Bool("greet-b", false, "Alternate the greet")

func main() {
  // Initializes the argument parsing
  Flag.Parse()

  // Remember: values returned by the above functions are pointers, so
  //           you'll need to dereference it.
  if !(*GreetB) {
    Fmt.Printf("Hello, %s!\n", (*Name))
  } else {
    Fmt.Printf("Hello, %s! How are you?\n", (*Name))
  }
}

This results in something like this: