Read data from a file using go language. Read more here https://golang.kertaskampus.com/How-To-Read-Data-From-A-File/

input.txt

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
tempor incididunt ut labore et dolore magna aliqua.

main.go

package main

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

func main() {
	// open input.txt file using read only flag and 0777 permission
	file, err := os.OpenFile("input.txt", os.O_RDONLY, os.ModePerm)
	if err != nil {
		log.Fatal(err)
	}

	// initialize []byte
	data := make([]byte, 100)
	// read data from a file
	_, err = file.Read(data)
	if err != nil {
		log.Fatal(err)
	}
	// print data to os.Stdout
	fmt.Fprintf(os.Stdout, "%q\n", data[:])
}