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Mac OS X Tiger in a Nutshell by Jason McIntosh, Chuck Toporek, Chris Stone, Andy Lester

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Name

readonly

Synopsis

                     
                        readonly
                      [options] [variable1 variable2...]

Prevent the specified shell variables from being assigned new values. Variables can be accessed (read) but not overwritten.

Options

-a

Treat the following names as array variables.

-f

Treat the following names as functions and set them read-only so that they can't be changed.

-p

Display all read-only variables (default).

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