FreeBSD Here is how to upgrade

freebsd-version  or  uname -mrs

 

freebsd-update fetch install

 

pkg update && pkg upgrade -y

 

freebsd-update -r xx.x-RELEASE upgrade

 

freebsd-update install

 

reboot

 

freebsd-update install

 

pkg-static install -f pkg
pkg update && pkg upgrade -y

 

ps aux
sockstat -l
sockstat -4
sockstat -6
netstat -a -n | grep LISTEN
top

 

tail -f /var/log/messages
grep error /path/to/app
egrep -i 'err|warn|cri' /var/log/messages

 

freebsd-version  or  uname -mrs