有几个通用的计时软件,一个是 Norton Utilities 4.5 中的 TM.EXE
TM-Time Mark, Advanced Edition 4.50, (C) Copr 1987-88, Peter Norton
    TM    
Switches
    /Cn   Select Counter n (n is 1, 2, 3 or 4)
    /L    Write TM info on Left side of screen
    /LOG  Format output for printing or file LOGging
    /N    No display of current time or date
还有就是 4DOS 把这个功能集成到内部命令中去了 timer
Purpose:  TIMER is a system stopwatch. 
Format:   TIMER   
          ON:  Force the stopwatch to restart. 
          OFF: Force the stopwatch to stop. 
          /1 (stopwatch #1, default)  /Q(uiet) 
          /2 (stopwatch #2)           /S(plit) 
          /3 (stopwatch #3)