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3.4.1 Positional Parameters

A positional parameter is a parameter denoted by one or more digits, other than the single digit 0. Positional parameters are assigned from the shell’s arguments when it is invoked, and may be reassigned using the set builtin command. Positional parameter N may be referenced as ${N}, or as $N when N consists of a single digit. Positional parameters may not be assigned to with assignment statements. The set and shift builtins are used to set and unset them (veja seção Comandos Nativos do Shell). The positional parameters are temporarily replaced when a shell function is executed (veja seção Funções do Shell).

When a positional parameter consisting of more than a single digit is expanded, it must be enclosed in braces.


Esse documento foi gereado por Jeremias em 19 de Junho de 2013 usando texi2html 1.82.