接受键盘输入的字符串，输出到文本a.txt中@echo offset str=set /p str=请输入：if not defined str (echo 未输入任意内容，按任意键退出&pause>nul&exit)echo>a.txt %str%start a.txt
@echo off set /p a=输入： echo %a%>1.txt start 1.txt
