Примеры скриптов:
echo off for ~f in () do echo TEST f & copyf sum.in > nul & ..\a.exe & check.exe sum.in sum.out f.a
echo off for ~f in () do echo TEST f & copyf sum.in > nul & ..\a.exe & fc /w f.a sum.out & if errorlevel 1 exit
echo off for ~f in (??) do echo TEST f & copyf sum.in > nul & ..\a.exe & check.exe sum.in sum.out f.a & if errorlevel 2 exit