DOS命令计算时间差

最近需要测定某个命令执行的时间，所以参考了一下网上的方法，大致实现如下：

 

@echo off

set CURRENT_DATE=%date:~0,10%
set CURRENT_TIME=%time:~0,8%
set MSG=%CURRENT_DATE% %CURRENT_TIME% 执行开始
set H1=%CURRENT_TIME:~0,2%
set /a H1=%H1:0=%+0
set M1=%CURRENT_TIME:~3,2%
set /a M1=%M1:0=%+0
set S1=%CURRENT_TIME:~6,2%
set /a S1=%S1:0=%+0
echo %MSG%
echo %MSG% >> 程序执行时间.log

::程序的执行命令
::================================================
ping 127.0.0.1 >nul
::================================================

set CURRENT_DATE=%date:~0,10%
set CURRENT_TIME=%time:~0,8%
set MSG=%CURRENT_DATE% %CURRENT_TIME% 执行结束
set H2=%CURRENT_TIME:~0,2%
set /a H2=%H2:0=%+0
set M2=%CURRENT_TIME:~3,2%
set /a M2=%M2:0=%+0
set S2=%CURRENT_TIME:~6,2%
set /a S2=%S2:0=%+0
echo %MSG%
echo %MSG% >> 程序执行时间.log

set /a TIME_SECOND1=%H1%*3600+%M1%*60+%S1%
set /a TIME_SECOND2=%H2%*3600+%M2%*60+%S2%
set /a TIME_DIFF=%TIME_SECOND2%-%TIME_SECOND1%
set /a H_DIFF=%TIME_DIFF%/3600
set /a M_DIFF=(%TIME_DIFF%-%H_DIFF%*3600)/60
set /a S_DIFF=%TIME_DIFF%%%60

if %H_DIFF% LSS 10 set H_DIFF=0%H_DIFF%
if %M_DIFF% LSS 10 set M_DIFF=0%M_DIFF%
if %S_DIFF% LSS 10 set S_DIFF=0%S_DIFF%

echo 执行时间:%H_DIFF%:%M_DIFF%:%S_DIFF%
echo 执行时间:%H_DIFF%:%M_DIFF%:%S_DIFF% >> 程序执行时间.log

pause >nul