Debian
Debian installation, package management, server configuration, and administration.
Debian Versions: Release History, Codenames, and Support Dates
Debian versions from Buzz to Trixie, with release dates, codenames, and support timelines. Compare stable, testing, unstable, LTS, and paid ELTS coverage.
apt update vs apt upgrade vs apt full-upgrade
Compare apt update, apt upgrade, and apt full-upgrade on Ubuntu and Debian. See which command refreshes package lists, installs updates, or can remove packages.
Fix the NO_PUBKEY GPG Error on apt update
Fix the apt NO_PUBKEY error on Ubuntu and Debian by installing a verified repository signing key under /etc/apt/keyrings and using signed-by.
How to Add and Delete Users on Debian 13
Create, delete, and lock user accounts on Debian 13 using adduser, deluser, and usermod, with practical examples for each command.
How to Create a sudo User on Debian
Create a sudo user on Debian 11, 12, and 13 by adding a new account and granting sudo privileges through the sudo group or the sudoers file.
How to Add User to Sudoers in Debian
Grant sudo privileges in Debian by adding a user to the sudo group or configuring a custom sudoers rule with visudo. Covers Debian 12 and 13.
How to Fix APT and dpkg Lock Errors on Ubuntu and Debian
Resolve APT and dpkg lock errors safely on Ubuntu and Debian by finding the process holding the lock and repairing interrupted package operations.
How to List Installed Packages on Debian with apt and dpkg
See what is installed on Debian, which packages you chose yourself, which use the most disk space, and when each one arrived, using apt and dpkg-query.
Install deb Files on Ubuntu: apt, dpkg, and gdebi
Install local .deb files on Ubuntu with apt, dpkg, or gdebi. Fix dependency errors, inspect packages, install via GUI, and remove them safely.
apt Command in Linux
The apt command manages packages on Ubuntu, Debian, and related distributions. This guide covers the essential commands for installing, upgrading, removing, and searching packages.
update-alternatives Command on Ubuntu and Debian
Use update-alternatives on Ubuntu and Debian to list, register, switch, and remove program alternatives, with automatic and manual mode examples.
apt vs apt-get: The Difference and When to Use Each
apt and apt-get are not the same tool: apt is built for interactive terminal use, apt-get for scripts and automation. Compare their commands and see when to use each.
How to Install pip on Debian 11, 12, and 13
Step-by-step instructions for installing pip3 on Debian 11, 12, and 13 using apt, with examples for installing, upgrading, and removing Python packages.
How to Install Nginx on Debian 13
Step-by-step instructions for installing and configuring Nginx on Debian 13 Trixie using apt, including UFW rules, the systemd service, and your first server block.
How to List Installed Packages on Ubuntu
List, filter, and export installed packages on Ubuntu with apt and dpkg, including how to find package details, manually installed packages, and install history.
How to Upgrade Debian 12 to Debian 13 Trixie
Step-by-step instructions for upgrading Debian 12 Bookworm to Debian 13 Trixie, including sources.list changes, package upgrades, and post-upgrade verification.
How to Install Git on Debian 13
Step-by-step instructions for installing and configuring Git on Debian 13 Trixie using apt or by compiling from source.
