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How to use bash builtin commands

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The Bash shell contains builtin commands that do not create a fork when they are used. This is a list and description of those builtins.
A builtin command is a command that is built into the shell so that the shell does not fork a new process. The result is that builtins run faster and can alter the environment of the current shell. The shell will always attempt to execute the builtin command before trying to execute a utility with the same name. For more information on the builtins:

info bash
 read more | mail this link | score:6771 | -aweber, December 28, 2011
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