Read a text file and print its lines in Go

text_file_reader.go

package main

import (
	"flag"
	"fmt"
	"io/ioutil"
	"strings"
)

var fileName = flag.String("f", "", "Filename to be read")

func main() {
	flag.Parse()
	content, err := ioutil.ReadFile(*fileName)

	if err != nil {
		panic(err)
	}

	lines := strings.Split(string(content), "\n")

	// First parameter returned by the next statement is a counter.
	// If you don't need it, you use _ as return variable.
	for _, line := range lines {
		fmt.Println(line)
	}
}

Example: go run text_file_reader.go -f test.txt