====== バッチファイルでカウント ======

  @echo off
  @setlocal
  
  set countfile="D:\vz\backups\backup_count.txt"
  
  @REM file check
  if not exist %countfile% echo count=0 > %countfile%
  
  FOR /F "tokens=1,2 usebackq delims==" %%a IN (`type "%countfile%"`) DO (
  	if %%a == count set count=%%b
    	@rem if %%a == pass set pass=%%b
  )
  
  @REM count check
  if %count%==6 (
  	set /a count=0
  	echo count=%count%
  ) else (
  	echo count=%count%
  )
  
  set /a count=%count%+1
  echo count=%count% > %countfile%


{{tag>バッチファイル}}