@echo off set n0=0 set n1=0 set n2=0 set file="xxx.txt" set newfile="new.txt" set word=xxx type nul>new.txt for /f "tokens=1* delims=:" %%i in ('findstr /n "." %file%') do set n0=%%i for /f "tokens=1* delims=:" %%i in ('findstr /n /c:"%word%" %file%') do set n1=%%i for /f "tokens=1* delims=:" %%i in ('findstr /n /c:"-- %word%" %file%') do set n2=%%i
if %n0% equ %n1% if %n1% neq %n2% goto :eof if %n0% equ %n2% (call :del-line %n2%) else (copy /y %file% %newfile%>nul) call :add-line move /y %newfile% %file%>nul goto :eof
:del-line for /f "tokens=1* delims=:" %%i in ('findstr /n ".*" %file%') do if %%i neq %1 echo;%%j>>%newfile% goto :eof
