disable [ -afmrs ] 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 regular or global aliases.
       The -s option causes disable to act on suffix aliases.   The  -f
       option causes disable to act on shell functions.  The -r options
       causes disable to act on reserved words.  Without arguments  all
       disabled  hash  table elements from the corresponding hash table
       are printed.  With the -m flag the arguments are taken  as  pat-
       terns  (which  should  be quoted to prevent them from undergoing
       filename expansion), and all hash table elements from the corre-
       sponding  hash table matching these patterns are disabled.  Dis-
       abled objects can be enabled with the enable command.
