@echo off
set "filename=Plugins.txt"
set "new_line=AltarGymNavigation.esp"

find /c /i "%new_line%" "%filename%" >nul
if %errorlevel% == 0 (
    echo Gym already enabled.
) else (
    attrib -R %filename%


    echo:>> %filename%

    >>"%filename%" <nul set /p="%new_line%"
    attrib +R %filename%
    echo Enabled Gym.
)

pause