Re: [shell-script] qual a diferença entre * e @

[Fabiano Caixeta Duarte]

Retirado de `man bash`

Special Parameters
      The shell treats several parameters specially.  These parameters 
may only be referenced; assignment  to
      them is not allowed.
      *      Expands  to the positional parameters, starting from one.  
When the expansion occurs within dou­
             ble quotes, it expands to a single word with the value of 
each parameter separated by the  first
             character  of  the IFS special variable.  That is, "$*" is 
equivalent to "$1c$2c...", where c is
             the first character of the value of the IFS variable.  If 
IFS is unset, the parameters are sepa­
             rated by spaces.  If IFS is null, the parameters are 
joined without intervening separators.
      @      Expands  to the positional parameters, starting from one.  
When the expansion occurs within dou­
             ble quotes, each parameter expands to a separate word.  
That is, "$@" is equivalent to "$1" "$2"
             ...   When  there  are  no  positional parameters, "$@" 
and $@ expand to nothing (i.e., they are
             removed).

Fabiano Caixeta Duarte
Consultor em soluções para Redes de Computadores
(16) 9139-2258



Tiago Peczenyj escreveu:

> L=( A B C D E F G H )
> echo ${L[@]}
> A B C D E F G H
> echo ${L[*]}
> A B C D E F G H
>
> ???
>
>
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