如何從大日志文件中讀取最后兩行而不將其完全加載到內存中？我需要每 10 秒閱讀一次（在 Win 機器上）......我一直在試圖閱讀最后幾行......package mainimport (    "fmt"    "time"    "os")const MYFILE = "logfile.log"func main() {    c := time.Tick(10 * time.Second)    for now := range c {        readFile(MYFILE)    }}func readFile(fname string){    file, err:=os.Open(fname)    if err!=nil{        panic(err)    }    buf:=make([]byte, 32)    c, err:=file.ReadAt(32, ????)    fmt.Printf("%s\n", c)}日志文件類似于：07/25/2013 11:55:42.400, 0.55907/25/2013 11:55:52.200, 0.47707/25/2013 11:56:02.000, 0.46307/25/2013 11:56:11.800, 0.45407/25/2013 11:56:21.600, 0.42407/25/2013 11:56:31.400, 0.38207/25/2013 11:56:41.200, 0.35307/25/2013 11:56:51.000, 0.38407/25/2013 11:57:00.800, 0.39307/25/2013 11:57:10.600, 0.456謝謝！