dig +short stackoverflow.com

104.18.32.7
172.64.155.249

systemctl list-timers

sudo apt remove brltty

du -Sh /* 2>/dev/null | sort -rh | head -20

sudo snap install --dangerous <file-*.snap>

Multiple definitions exist for class 'Throwable'

/** @noinspection PhpMultipleClassDeclarationsInspection */

nmap -p- 1.2.3.4

echo "{ \"iptables\" : false }" > /etc/docker/daemon.json
service docker restart
ufw deny 5432 && ufw reload