Debian

Apt cheat sheet

The cheat sheet for the apt package manager to cover the most used options. Learn how to get more out of the apt command.

Discover to which package a file belongs to

With the right Linux software tools, it is easy to find to which package a file belongs. Or the opposite, what files are part of an installed package.

How to solve an expired key (KEYEXPIRED) with apt

Software updates and package management is easy, until you get a KEYEXPIRED message. In this article we should how it happens and the way to solve it.

Linux vulnerabilities: from detection to treatment

How to deal with Linux vulnerabilities? This article shares the insights, methods, and tools to help with detection and prevention on Linux systems.

Determine which processes need a restart with checkrestart/needrestart

Just patching software packages is not enough. We cover some tools to determine which processes need a restart to complete software patch management.

Using unattended-upgrades on Debian and Ubuntu

To counter the biggest threat to software packages, Debian and Ubuntu based systems can use unattended-upgrades, to install security patches automatically.

How to solve Shellshock on Debian and Ubuntu

Also Debian and Ubuntu are vulnerable for Shellshock vulnerability in Bash. That's why it is important to run apt update and perform an upgrade of Bash.

Check for a required reboot on Debian and Ubuntu systems

Debian based systems, like Ubuntu, need sometimes a reboot as well. We have a look on determining if a required reboot is needed and due to what packages.