disable [ -afmr ] name ...
       Temporarily disable the named hash table elements.  The  default
       is  to  disable  builtin  commands.   This  allows you to use an
       external command with the same name as a builtin  command.   The
       -a  option  causes  disable  to  act  on aliases.  The -f option
       causes disable to act on shell functions.  The -r options causes
       disable  to  act  on reserved words.  Without arguments all dis-
       abled hash table elements from the corresponding hash table  are
       printed.   With  the -m flag the arguments are taken as patterns
       (which should be quoted to prevent them from undergoing filename
       expansion),  and  all hash table elements from the corresponding
       hash table  matching  these  patterns  are  disabled.   Disabled
       objects can be enabled with the enable command.
