set count=1
set time
set log=copylog.txt
:samba_test_loop
If %count%==3 goto end
echo ======================= Samba test loop %count% starts ======================= >>%log%
date /t
time 00:00:00
copy D:\2\ravz08.exe d:\1\ /y  ::根据实际情况修改
If ERRORLEVEL 1 echo copyfail >>%log%
echo %time% >>cmdlog.txt
echo ============================================== >>%log%
set /a count=%count%+1
goto samba_test_loop
:end