gistfile1.go

package main

import (
	"fmt"
	"os"
)

func main() {
	path := "/home/larz/Desktop/wut.txt"
        //                             V This is the bugger I was having problems with
        //                             V Was trying to to O_APPEND without giving write perms as well
        //                             V
	file, err := os.OpenFile(path, os.O_RDWR|os.O_APPEND, 0666)
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}

	file.WriteString("sdlfkjsdsdfsdfsdffljksdflkj\n")
}