I'm sorry, I found the answer in the FAQ.
So i'ts resolved.

Thanks
‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Friday, January 15, 2021 12:08 PM, Andrea Dari <andreadari@protonmail.com> wrote:

> Hello,
>
> I'm using GNU coreutils 8.30, I found that the printf tool is broken while coding a shell script.
>
> andrea@Workstation:~$ printf --version
> bash: printf: --: invalid option
> printf: usage: printf [-v var] format [arguments]
>
> I tried with coreutils 8.32 too with the same error.
>
> PRINTF(1) man page reports the option valid:
>
> NAME
> printf - format and print data
>
> SYNOPSIS
> printf FORMAT [ARGUMENT]...
> printf OPTION
>
> DESCRIPTION
> Print ARGUMENT(s) according to FORMAT, or execute according to OPTION:
>
> --help display this help and exit
>
> --version
> output version information and exit
> ...
>
> the option --help works.
>
> I have another issue with printf, I wanted to print a string that starts with "-" and printf parse it like an option:
>
> andrea@Workstation:~$ printf "->"
> bash: printf: ->: invalid option
> printf: usage: printf [-v var] format [arguments]
>
> I'm doing something wrong?
>
> Best Regards,
>
> Andrea Dari