1 package main 2 3 import ( 4 "fmt" 5 "os" 6 "time" 7 ) 8 9 func main() { 10 f, _ := os.Create("file-output") 11 for i := 0; i < 300; i++ { 12 fmt.Fprintf(os.Stdout, "STDOUT %d\n", i) 13 fmt.Fprintf(os.Stderr, "STDERR %d\n", i) 14 fmt.Fprintf(f, "FILE %d\n", i) 15 time.Sleep(10 * time.Millisecond) 16 } 17 f.Close() 18 } 19