@echo off setlocal EnableDelayedExpansion if exist jpl_summary.txt (del jpl_summary.txt) for %%f in (horizons\*.txt) do ( node jpl_horizons_check.js %%f > summary.txt if errorlevel 1 (exit /b 1) type summary.txt type summary.txt >> jpl_summary.txt del summary.txt ) node jpl_horizons_check.js tally jpl_summary.txt if errorlevel 1 (exit /b 1) del jpl_summary.txt echo.jplcheck: Finished exit /b 0