REM  ==== volne misto na C: ====
chcp 1250
set datum=%date:~-10%
set cas=%time:~0,5%
for /f "usebackq tokens=2,*" %%x in (`reg query "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders" /v desktop ^| find "_"`) do (set plocha=%%y)
set log=%plocha%\volne_misto.txt

(set filtr=ch bajt)
 dir c:\ /w | find "%filtr%" >nul
  if errorlevel 1 (set filtr=bytes free)
for /f "usebackq tokens=2,*" %%x in (`dir c:\ /w ^| find "%filtr%"`) do (set volno=%%y)

echo %datum%, %cas%, %volno%
echo %datum%, %cas%, %volno% >>"%log%"