[Elven]

Подкорректировал

Код:

@echo off
set name="amb"
pushd "F:\folder1"
for /f %%i in ('dir /b /a:-d ^| find /v /c /i %name%') do if %%i geq 20 (
echo ^>= 20 ^(%%i^)
dir /b /a:-d | find /v /i %name%
) else (
echo ^<20 ^(%%i^)
dir /b /a:-d | find /v %name%
)
popd