package main

import (
	"fmt"
	"io"
	"log"
	"os"
)

func main() {
	if len(os.Args) != 2 {
		fmt.Printf("No filename given!\n Usage: %s <filename>\n", os.Args[0])
		os.Exit(1)
	}
	filename := os.Args[1]
	file, err := os.Open(filename)
	if err != nil {
		log.Fatal(err)
		os.Exit(1)
	}
	io.Copy(os.Stdout, file)
}