iptables REJECT vs DROP
MariaDB mySQL backup and restore in Docker
git - delete a folder from the repository after adding it to .gitignore
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 …
How to Install pip for Python (Step by Step)
Step-by-step guide to install pip for Python on Linux, macOS and Windows — check your version, run get-pip.py and fix common errors.
Glances: The indispensable monitoring tool for system administrators
Glances is an essential monitoring tool for system administrators that provides a comprehensive real-time overview of system resources such …
Find out the kernel version of Debian
Debian 13 “Trixie” ships the 6.12 kernel series, Debian 12 the 6.1 series. Which kernel actually runs on your system is one line of uname …
Create an SSH key
An SSH key replaces the password when logging into a server: the private key stays on your machine, the public one goes into …
Aliases in the shell: increase efficiency and avoid errors
Aliases in the shell are an effective way to increase efficiency when working in the terminal and avoid typing errors. The article explains …