Show reverse dependencies of a package using apt

There is a new bug in libpng right now. When you want to see which package is using libpng (or better: which package depends on libpng), you can do a reverse dependency search:

This shows you a list of packages which directly depend on libpng. It lists all the tools which use the shared…

Failed to connect to Invalid argument

When trying to install Software on Ubuntu, Debian, CentOS,.. and you have your proxy configured wrong, you may get the following error:

To solve it, open your proxy settings and make sure to also add https, like:

Have a look into the following files (if they exist) and look for proxy settings. It’s…

Best PHP, HHVM and MongoDB Source for Debian Jessie

Just installed Debian 8. I’m using php5-cli for cronjobs, HHVM for webpages (using fcgiwrap) and MongoDB for various collections. Here are my current source for Debian Jessie as bash commands, offering org sources. I included pin preference files for apt to set priorities, which source to use for which package.

Debian apt-pinning (Dotdeb, MariaDB, MongoDB, …)

Short post, I’d like to share my source lists for Debian 7.6, including apt-pinning for MariaDB / MySQL. It also includes all Packages from Dotdeb (Zabix, Redis, PHP, …).

Apt-pinning preference file for MariaDB / MySQL: /etc/apt/preferences.d/mariadb

“kept back” version, dependencies and apt-pinning

When you are using different sources in your Debian installation, for example or Repositories, you may encounter a message like:

How to compare the installed version to the available packages?

You now can execute apt-get dist-upgrade to upgrade all packages, but be warned, this can remove software, add packages and upgrade…