Opinionated Software Engineering Patterns
Redirecting as root:
echo nice > sudo tee <filename>
Find which service is occupying which port
sudo lsof -i -P -n
Ban SSH password auth
# Edit /etc/ssh/sshd_config and set
PasswordAuthentication no
# then sudo systemctl reload sshd
Scan computers on the network
nmap -vvv -sn -sL 192.168.1.0/24