In the context of open source operating systems, the term “unixoid” is often used, indicating that the software is similar to the Unix system published in 1969. Typical indicators are, for example, the file system, or means and rights available to access the system and its processes. But what exactly is Unix, and who is behind the development of this influential operating system?
Most PC users are only familiar with Windows in its various versions, but there are alternative operating systems on the market. Linux distributions offer many advantages compared to Microsoft’s product. Nonetheless, there are many things to take into consideration before switching. So, who should you fight for in the great battle – Linux or Windows?
Google Chrome, Mozilla Firefox, Apple Safari, Opera, or good old Internet Explorer? The debate about which web browser is number one has been going on for years among the internet community. But what is a browser exactly? And is there one in particular that can trump the competition and truly be the best browser?
Various computer networks are connected with one another via the internet. In order to build up such connections, both the sending as well as the receiving systems have to provide transfer interfaces, or ports. Netstat allows you to find out which ports are opened by your own system and which active connections exist — all of this helps reduce the risk of undesired access attempts.
Under Linux, all actions that you can carry out with the mouse and window system via the graphical user interface can also be performed using programme calls in the terminal – provided you know the appropriate command and how to use it according to the correct syntax. To make working in the terminal easier, we provide you with an overview of basic Linux commands with detailed descriptions and...
Anyone looking to learn about Linux operating systems will come across Debian soon enough. The GNU/Linux distribution was one of the first of its kind and is still one of the most widely used today. Over 1,000 community members work on the Debian project, furthering the development of the collection. But how did Debian become so successful? And what makes this system software so interesting to...
Whether a home PC, work laptop, or website server – without an operating system, the management of hardware resources wouldn’t be possible. Windows systems have proven themselves over the years, and Apple computers run with Mac OS X as the standard, but Linux distributions are no longer a niche in the server environment. Ubuntu, for example, continues to build on traditional open source...
If you operate or rent your own server, it is your responsibility to protect it against failures and external access. You can immediately begin to set the foundation for this when configuring the server, if you have the necessary administrative rights. The correct settings can work wonders, especially with encrypted remote connections via SSH protocol, and greatly increase security.
Server backups are the best way to save vital data from your online projects and avoid losing data. A sophisticated backup strategy including all terminal devices is essential, especially in server environments. To do so, you need reliable backup programmes. In addition to software solutions and online services, which are often very expensive, free applications like rsync offer an alternative.
The core component of operating systems like Windows or Linux, known as the kernel, is crucial to be able to use the underlying hardware effectively. For security reasons, this system core works on a higher layer than application programs can normally access. It is only with so-called system calls that processes from system-external software can temporarily access the kernel mode.