Archaic wrote:

KERNEL=="rtc",          MODE="664"
# Changed from 666. The distros disagree on mode, but none allow world write.

They are right: you don't want random users to set the hardware clock. And read-only access is still useful for high-precision timing (and used, e.g., by qemu).

KERNEL=="tty[0-9]*",    MODE="620"  GROUP="tty"
# Changed from 666 (too lax). Need to ensure this doesn't break anything. A live
# debian box shows 620, but the rules show 666.

That's because the "login" program sets permissions.

--
Alexander E. Patrakov
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