Yamateh

第三题
@echo off
set str=bbs bathome,net
for /f "tokens=1-3 delims=, " %%i in ("%str%") do set  str1=%%i %%j %%k
for  %%i in (%str1%) do echo %%i
pause>nul
第四题
@echo off
for /f "tokens=1,2,3" %%i in (test.txt) do echo %%i %%j %%k
pause>nul
for /f "tokens=2"  %%i in (test.txt) do echo %%i