Tutorials

XPath Tutorial

XPath Tutorial for Beginners

XPath provides you with a syntax that clearly addresses the elements of an XML document. As a path description language, XPath is the basis for query languages such as XQuery or the transformation of XML documents via XSLT. We’ll introduce to you the XPath data model and use examples to illustrate XPath syntax.

Gmail out of office

Gmail out-of-office: here’s how to set it

An out-of-office message informs others that you’re temporarily unavailable. Setting an out-of-office message in Gmail only takes a few steps. It’s perfectly normal to use a Gmail out-of-office message – holidays, illness, or business trips are just some of the reasons for why you might need to know how to set up an out-of-office reply in Gmail.

Shift key

The Shift key – functions and keyboard shortcuts

The most important function of the Shift key is to switch between uppercase and lowercase letters. These two keys on the bottom left and right side of the keyboard originate from the days of mechanical typewriters. The Shift keys on your keyboard have a range of other interesting functions on your Windows PC. In this article, we’ll walk you through them.

Clear history on Firefox

Clear Firefox history: Here’s how

Sites you’ve visited, active logins, individual website settings – Firefox provides you with the option of saving any user data in the browser-specific history, but this practical feature always comes with the risk that such information could end up in the wrong hands. We’ll show you how to counter this risk, and clear your Firefox history.

Private browsing Safari

Private browsing Safari

Browsing the internet without leaving a trace – that’s the promise of incognito mode. In Safari, it goes by the name of “private browsing” and ensures that your browser history, cookies, and cache data aren’t saved locally. We’ll show you how to activate and deactivate private mode in Safari on various devices.

Activate incognito mode

Incognito mode: activate private surfing

All well-known browsers come with incognito mode which lets you ‘surf privately’ on the web. Find out what private mode means in practice and how to activate it in in Google Chrome, Mozilla Firefox, Microsoft Edge, and Apple Safari. But beware that incognito mode on its own does not guarantee anonymity online.

Raspberry Pi Nextcloud

Nextcloud on Raspberry Pi - private cloud made affordable

Nextcloud for Raspberry Pi is a low-budget solution for creating your own cloud. It comes with a number of features, allows maximum control over your data, and can be used privately or for your business. Comprehensive security features and encryption methods are also part of the package. Installation is quick and user-friendly.

Docker on Raspberry Pi

Docker on Raspberry Pi: a how-to guide

Developers use Raspberry Pi for a variety of purposes. Among the areas its particularly useful for is working with container technology. Connecting Docker to Raspberry Pi comes with a number of advantages, since both are perfect for creating test environments. Keep reading to learn about the ins and outs of combining Raspberry Pi and Docker.

Raspberry Pi: How to set up an SSH server

Raspberry Pi: activating and using SSH access

Raspberry Pi has established itself as a reliable basis for servers of various types. Access – for configuration and maintenance purposes – rarely takes place on the mini computer itself, but mostly on a desktop computer in the same network. The communication protocol is the secure SSH (secure shell), which isn’t enabled by default and hasn’t been for some time. How to activate the Raspberry Pi...


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