public/go/tofix/displayfile/correct/main.go

package main

import (
	"fmt"
	"io/ioutil"
	"os"
)

func main() {
	if len(os.Args) < 2 {
		fmt.Println("File name missing")
		return
	}
	if len(os.Args) > 2 {
		fmt.Println("Too many arguments")
		return
	}
	fileName := os.Args[1]
	data, err := ioutil.ReadFile(fileName)
	if err != nil {
		panic(err)
	}
	os.Stdout.Write(data)
}