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No pubkey error in apt repository

Linux

How to fix APT error public key is not available (NO PUBKEY)

If you use the APT package repositories (for Debian, Ubuntu and similar distributions), you might ...

By Claudio Kuenzler

January 10, 2026

APT repository shows expired key

Linux

How to renew Grafana APT repository key

If you use the APT package repositories (for Debian, Ubuntu and similar distributions), you might ...

By Claudio Kuenzler

December 8, 2025

kdenlive

Linux

How to install Kdenlive requirements for speech to text feature

The open source video editor Kdenlive supports speech to text. This neat feature automatically creates ...

By Claudio Kuenzler

November 24, 2025

SSH Login failed

Linux

How to fix SSH error "Too many authentication failures"

When you try to connect to a remote server using SSH, you might run into ...

By Claudio Kuenzler

November 20, 2025

Raspberry Pi board

Linux

How to find out which Raspberry Pi model you are running

If you're unsure what kind of Raspberry Pi (link to AMZN) you are using, there ...

By Claudio Kuenzler

November 17, 2025

Linux

Bug in Varnish Enterprise 6.0.16r2 leads to removal of package

A bug was discovered in the most recent release of Varnish Enterprise (6.0.16r2), released on ...

By Claudio Kuenzler

September 15, 2025

Linux

Rocky & Alma Linux 10 images available for LXC and Incus containers

Good news for everyone working with LXC and Incus containers: Rocky and Alma Linux 10 ...

By Claudio Kuenzler

September 9, 2025

Gitlab SSH key

Linux

GitLab says your SSH key is expiring soon – but which one?

In order to communicate (and authenticate) with Git repositories on GitLab, there are a couple ...

By Claudio Kuenzler

September 4, 2025

Debian 13 setup

Linux

How to install Debian 13 (Trixie), step by step

Since yesterday, August 9th 2025, Debian 13 (Code name: Trixie) is officially released. If you're ...

By Claudio Kuenzler

August 10, 2025

Debian

Linux

Debian 13 (Trixie) release date published

The wait is – almost – over. The release date for the next Debian Linux ...

By Claudio Kuenzler

July 21, 2025

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