Re: the GPG_TTY line in bashrc produces error message in chroot environment

Xi Ruoyao <[email protected]> 于2025年10月18日周六 19:00写道：
>
> On Sat, 2025-10-18 at 12:17 +0800, Zhang Wen wrote:
> > The root cause is while the tty command returns non-zero in the chroot
> > environment, the 'tty -s' command returns a zero value.
> > I changed 'tty -s' to 'tty > /dev/null 2>&1' and the error message
> > disappeared, not sure if there's a better solution.
>
> I'd say it's a coreutils bug and it should be reported to the coreutils
> developers.  "tty -s" should have the same exit status as "tty".
>
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> Xi Ruoyao <[email protected]>
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It's not necessarily the truth, there's a code structure overview link
below the the git line on https://www.gnu.org/software/coreutils:
https://www.maizure.org/projects/decoded-gnu-coreutils/tty.html
It says that the silent mode of tty only return result of the isatty
function in the c library, while the normal mode return result of the
ttyname one.

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