Another example: for OpenBSD part of the manual upgrade procedure (not the recommended method, but useful if you don't have a console to run the installer) is t

Another example: for OpenBSD part of the manual upgrade procedure (not the recommended method, but useful if you don't have a console to run the installer) is to make a copy of /sbin/reboot, because there's a good chance that the new /sbin/reboot you're about to install will have the wrong syscalls for the running kernel.