Windows batch file to validate list of URLs with AMP errors

validate_amp_collection.bat

@ECHO OFF
FOR /F "usebackq tokens=1 delims=," %%A IN (`grep -v "URL" elsemanario-com__etiqueta_HTML_prohibida.csv`) DO (
    FOR /F "usebackq" %%B IN (`amphtml-validator --format=json %%A`) DO (
         echo %%B|findstr /C:"PASS" >NUL 2>&1
         IF not errorlevel 1 (
              echo %%A | tee -a valid_urls.txt
         ) ELSE (
              echo %%A | tee -a nonvalid_urls.txt
         )
    )
)