@echo off
rem 本批处理是取指定目录下所有文件的内容，写入b.txt
set lj=%~dp0
set lujing=
set /p lujing= 请输入目录：
cd /d %lujing%
for /r %%i in (*.*) do ( FOR /F %%i IN (%%i) DO @echo %%i >>%lj%b.txt)
cd /d %lj%
rem 本批处理是取指定目录下所有文件的内容，写入b.txt
set lj=%~dp0
set lujing=
set /p lujing= 请输入目录：
cd /d %lujing%
for /r %%i in (*.*) do ( FOR /F %%i IN (%%i) DO @echo %%i >>%lj%b.txt)
cd /d %lj%