1 QUOTA_CHECK
  The QUOTA CHECK command is used to check your available disk space against
  two limits that you specify.  If the available space is less than the
  first limit, a warning message is produced.  If the available space
  is less than the second limit, an alarm is sounded.  If no second limit
  is specified, it is half of the first limit.  If no limits are provided,
  4000 and 2000 are used.

  The syntax for this command is:

             QUOta_check  [upper_limit [lower_limit]]

  It is recommended that this command be placed in your LOGIN.COM file.

2 Examples
  The command "QUOTA_CHECK 5000 3000" will give you a warning message if
  you have less than 5000 blocks of disk space available and an alarm if you 
  have less than 3000 blocks available.

  The command "QUOTA_CHECK 7000" will give you a warning message if you
  have less than 7000 blocks of disk space available and an alarm if you 
  have less than 3500 blocks available.

  The command "QUOTA_CHECK" will give  you a warning message if you 
  have less than 4000 blocks of disk space available and an alarm if 
  have less than 2000 blocks available.  (4000 and 2000 are the 
  defaults when you do not specify any limits.)

  The command "QUOTA_CHECK 0 4000" will never give a warning, but will
  sound an alram if less than 4000 blocks are available.
