Re: How to safely print a variable with secret value to stdout?

[Alex fxmbsw7 Ratchev]

regarding 'secure', i thought some ago about it, and the only thing i found
are dynamical reads for / of the passwd

no --arg no export
replayable password print and read

On Thu, May 12, 2022, 06:04 Philippe Cerfon <philcerf@gmail.com> wrote:

> On Thu, May 12, 2022 at 4:05 AM Greg Wooledge <greg@wooledge.org> wrote:
> > You can't idiot-proof the entire world.  If a damned idiot does something
> > this stupid and compromises their own security, it is not your fault.
> > Moreover, you cannot PREVENT them from doing it.  It's out of your hands.
>
> Sure, but just trying to write portable code is not beyond acceptable
> means of preventing stupid things from happening.
>
> > Write it in C.
>
> I'm afraid I have to use shell here.
>
>
> If someone has an idea whether my assumption about built-in printf is
> correct, i.e. that it would be safe, and whether the method with
> command -v is safe to check for that I'd still be interested to hear,
> of course also if someone knows some nice other way.
>
> Regards,
> Philippe.
>
>