[Foreigner]

нужно удалять повторы »

Код:

@echo off
setlocal

for /f %%i in (access_result.log) do set "line_%%i=1"
for /f "tokens=2 delims=_=" %%i in (' set line_ ') do 1>>access_result.tmp echo %%i
move access_result.tmp access_result.log