builtin help local
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local: local [option] name[=value] ... Define local variables. Create a local variable called NAME, and give it VALUE. OPTION can be any option accepted by `declare'. Local variables can only be used within a function; they are visible only to the function where they are defined and its children. Exit Status: Returns success unless an invalid option is supplied, a variable assignment error occurs, or the shell is not executing a function.
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