Logging to a file - rewrite

---

• Set the output filehandle using SetOutput

examples/logging-to-file/logging_to_file.go

package main

import (
    "log"
    "os"
)

func main() {
    var filename = "logging_to_file.log"
    var fh, err = os.Create(filename)
    if err != nil {
        log.Fatalf("Could not open file '%v': %v", filename, err)
    }
    log.SetOutput(fh)

    log.Print("Hello logfile")
    log.Fatal("This is bad")
}

examples/logging-to-file/logging_to_file.log

2020/04/10 08:55:04 Hello logfile
2020/04/10 08:55:04 This is bad