Just upgraded from 6.3 to 6.4 and the doas behaviour seems to have changed.
I finally solved it, but just posting here in case anyone has this problem. I had a few little shell scripts in /usr/local/sbin/ - intended to be run by doas : one-liners like bioctl mounting a USB stick or whatever. After upgrading to OpenBSD 6.4, all of them returned a "command not found" error. I tried moving them to different paths in $PATH, but no luck. Yet they'd work if I was root - just not via doas. Adding a "#!/bin/sh" at the top of the scripts made them all work again. Just FYI. - Derek
