关于bat去除重复行的问题，急用~~

Question

处理前的文件内容：
aud_file_pushesbuffer_vsb :src\drv\audio\aud_vsb.c:166
aud_file_pushesbuffer_vsb :src\drv\audio\aud_vsb.c:167
aud_get_buf_requirement_vsb :src\drv\audio\aud_vsb.c:123
aud_mute_onoff_vsb :src\drv\audio\aud_vsb.c:297
aud_mute_onoff_vsb :src\drv\audio\aud_vsb.c:298
aud_pause_vsb :src\drv\audio\aud_vsb.c:318
aud_pause_vsb :src\drv\audio\aud_vsb.c:319
希望处理后变成：
aud_file_pushesbuffer_vsb :src\drv\audio\aud_vsb.c:166
aud_get_buf_requirement_vsb :src\drv\audio\aud_vsb.c:123
aud_mute_onoff_vsb :src\drv\audio\aud_vsb.c:297
aud_pause_vsb :src\drv\audio\aud_vsb.c:318

Answer 1

@echo off
(for /f "delims=" %%i in (test.txt) do if not defined %%i set %%i=A&echo %%i)>newtest.txt
echo end...
pause