Go file read

Example

Read line one by one

package main

import (
	"bufio"
	"fmt"
	"os"
)

func main() {
	file, err := os.OpenFile("test.txt", os.O_RDONLY, 0)
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
	// Close file
	defer func() {
		file.Close()
	}()

	scanner := bufio.NewScanner(file)
	for scanner.Scan() {
		fmt.Println(scanner.Text())
	}
	if err := scanner.Err(); err != nil {
		fmt.Println(err)
		os.Exit(1)
	}
}