Enable and disable builtin shell commands.
enable [-n] [-p] [-f filename] [-ads] [name …]
-a list each builtin with an indication of whether or not
it is enabled.
-d Delete a builtin loaded with &qt;-f&qt;&qt;.
-f load the new builtin command name from shared object filename,
on systems that support dynamic loading.
-n Disable the names listed, otherwise names are enabled.
-p Print a list of shell builtins, default if no name arguments appear
With no other arguments, the list consists of all enabled shell builtins.
-s Restrict to enable only POSIX special builtinsDisabling a builtin allows a disk command which has the same name as a shell builtin to be executed without specifying a full pathname, even though the shell normally searches for builtins before disk commands.
For example, to use the test binary found via $PATH instead of the shell builtin version, type &qt;enable -n test&qt;&qt;.
If there are no options, a list of the shell builtins is displayed.
If &qt;-s&qt;&qt; is used with &qt;-f&qt;&qt;, the new builtin becomes a special builtin.
The return status is zero unless a name is not a shell builtin or there is an error loading a new builtin from a shared object.