In dieser Card machst du einige Übungsaufgaben um Linux Server mit Ansible zu verwalten. Da es vermutlich zu aufwendig ist...

If you use third party APT sources you might end up with unmaintained packages after removing the external source or...

Based on the Ruby Basics Card in the developer Curriculum Ruby is the programming language we use on the backend...

Instead of using Puppet exported resources you can use the puppetdb_query feature. This can result in more complex code...

When you are working with SVG files and ImageMagick you can get different results on different machines depending on which...

Debugging image color profiles is hard. You can't trust your eyes in this matter, as the image rendering depends...

Slides for Henning's talk on Sep 21st 2017. Understanding sync vs. async control flow Talking to synchronous (or "blocking...

Exercise 1: XML On the start page of your Movie DB, show the title of a random movie that is...

Ruby is the programming language we use on the backend. Goals After finishing this lesson you should be able to...

If you're using Paperclip to store and convert images attached to your models, processing a lot of images will...

Sometimes you inherit a non Rails or non Rack based web app such as PHP, Perl, Java / JEE, etc. I...

Subfolio provides an elegant, practical and customizable web interface to your file system. Super fast to set-up and use...