builtin in Mac OS X
By: Strauss K
Execute the specified shell builtin, passing it arguments, and return its exit status.
Syntax builtin shell-builtin [arguments]
This is useful when defining a function whose name is the same as a shell builtin, retaining the functionality of the builtin within the function. The cd builtin is commonly redefined this way.
The return status is false if shell-builtin is not a shell builtin command.
Example
$ builtin ls
builtin is a builtin command
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