why- Open BSD .rocks

sysupgrade(8) (∞)

sysupgrade is a utility to upgrade OpenBSD to the next release or a new snapshot if available.

sysupgrade downloads the necessary files to /home/_sysupgrade, verifies them with signify, and copies bsd.rd to /bsd.upgrade.

sysupgrade by default then reboots the system. The bootloader will automatically choose /bsd.upgrade, triggering a one-shot upgrade using the files in /home/_sysupgrade.

Since OpenBSD 6.7, sysupgrade runs fw_update before upgrading.