ccsky_an

A1

@echo off
set str=I love,bbs;bathome.net
for %%i (%str%) do echo %%iCOPY

A2 实现不了

@echo off
set str=I love,bbs;bathome.net
for %%i (%str%) do if exist "net" echo %%iCOPY

另求149楼两段代码解释，完美实现了

@echo off
set str=I love,bbs;bathome.net
for %%i in (%str:~0,-4%) do echo %%i
for %%i in (%str:~-3%) do echo %%i
pauseCOPY