执行系统更新
freebsd-update fetch
freebsd-update upgrade -r 12.0-RELEASE
freebsd-update install
reboot
freebsd-update install
系统提示
Completing this upgrade requires removing old shared object files.
Please rebuild all installed 3rd party software (e.g., programs
installed from the ports tree) and then run "/usr/sbin/freebsd-update install"
again to finish installing updates.
执行更新操作
pkg-static install -f pkg
pkg update
pkg upgrade
freebsd-update install
freebsd-version