Security

Look for vulnerabilities in installed packages:

pkg audit -F

Look for root kits:

rkhunter -c

To read a log in realtime:

tcpdump -n -e -ttt -i pflog0

To set keyboard on console:
setxkbmap gb
(to set this permanently add the command to \$HOME\.profile)

Install packages:
pkg install mc   #midnight commander
pkg install youtube_dl   #to use: youtube-dl