批处理符号

for /f "tokens=1-3 delims=.: " %%1 in ("%time%") do set ttt=%%1%%2%
set /a ttt=%ttt%+2
for /f "tokens=1-3 delims=- " %%1 in ("%date%") do set ttt=%ttt%%%3%%2%
set ttt=%ttt:~1,-1%