Example
It is possible to specify log destination with something that statisfies io.Writer interface. With that we can log to file:
package main
import (
"log"
"os"
)
func main() {
logfile, err := os.OpenFile("test.log", os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
if err != nil {
log.Fatalln(err)
}
defer logfile.Close()
log.SetOutput(logfile)
log.Println("Log entry")
}
Output:
$ cat test.log
2016/07/26 07:29:05 Log entry
