builtin - run a builtin command

概要

builtin [OPTIONS] BUILTINNAME
builtin --query BUILTINNAME ...
builtin --names

描述

builtin forces the shell to use a builtin command named BUILTIN, rather than a function or external program.

The following options are available:

-n or --names

Lists the names of all defined builtins.

-q or --query BUILTIN

Tests if any of the specified builtins exist. If any exist, it returns 0, 1 otherwise.

-h or --help

顯示此指令的幫助資訊。

範例

builtin jobs
# executes the jobs builtin, even if a function named jobs exists