How to Show Used Ports in Linux (ss, netstat, lsof)
Show used (open) ports in Linux with ss, netstat and lsof. Quick commands to list listening ports, find which process uses a port and …
How to use Sudo on Debian
Install sudo on Debian, add an account to the sudo group and edit the sudoers file safely with visudo. Including the reason group …
iptables restore: Restore Rules from File after Reboot
iptables restore: reload your firewall rules from a file with iptables-restore and make them survive a reboot on Debian 13 and current …
Aliases in the shell: increase efficiency and avoid errors
An alias replaces the first word of a command line before the shell runs it. This article shows how to create aliases in Bash and Zsh, how …