BAT批处理如何截取字符串？bat截取字符串的示范代码

@ECHO OFF
 
SET Hour=%TIME:~0,2%
 
IF %Hour% GTR 12 (
  ECHO Afternoon
) ELSE (
  ECHO Morning
)

@ECHO OFF
 
FOR /F "tokens=1,2,3,4" %%I IN ('VER') DO (
  SET Ver_Temp=%%L
)
 
SET Ver_Major=%Ver_Temp:~0,1%
SET Ver_Minor=%Ver_Temp:~2,1%
SET Ver_Build=%Ver_Temp:~-5,4%
 
ECHO Windows Version:
ECHO  Major %Ver_Major%
ECHO  Major %Ver_Minor%
ECHO  Build %Ver_Build%