package main import ( "io/ioutil" "os" ) func fileRead(src string) string { content, err := ioutil.ReadFile(src) errorPanic(err) return string(content) } func fileAddLine(input string, filepath string) { file, err := os.OpenFile(filepath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644) errorPanic(err) _, err = file.WriteString(input + "\n") errorPanic(err) }