How do you show hidden files and folders on your Mac? And why are folders and files hidden at all? In this how-to article, we’ll answer these questions and offer additional practical tips. For example, we’ll explain how to use Terminal commands to show files on a Mac and how to access hidden files using a file manager.
Analyses and calculations in Excel can be highly complex. Excel’s worksheets let you create huge tables, but sometimes you just want to answer a very simple question: How many cells in the table contain a number? In big worksheets, it can be virtually impossible to check the whole thing manually. The COUNT function in Excel was created specifically to solve this problem.
When it comes to explaining the complex features of computer programs, written instructions only go so far. Screencasts can help you to explain complex processes in a simple and entertaining way, to show what’s happening on your screen. Keep reading to find out how to make a screencast and what you should take into consideration during preparation and editing.
Hash functions are used in many areas of computer science. They generate hash values that represent digital information in a consistent manner according to defined parameters. They provide additional security (using encryption) during data transmission and allow data to be accessed more quickly. We explain what hash functions are, how they are used and provide some examples.
Since 2016, Google developers have been working on a new open source operating system. Unlike Chrome OS and Android, Fuchsia OS is not based on the Linux kernel. Google is trying out a different path. We introduce you to the software project, take a look at the state of development, and dare to make some initial predictions about what Google has in store for Fuchsia OS.
Through KVM, the open-source operating system Linux provides a powerful integrated virtualization function. This makes it possible to run one or more operating systems as guest systems on a Linux computer. Being directly integrated into the operating system’s kernel, it ensures high stability and good performance. Since this virtualization solution is available free of charge, it’s worth checking...
Data protection is very important, especially when it comes to high-security branches like the government and the military. Users in most organizations only have access to the data they need to do their job, and when it comes to highly sensitive data, it’s important to have a system that’s as tamper-proof as possible. That’s where Mandatory Access Control comes in. Keep reading to find out how...
Using a combination of the IF function and the OR function, you can perform specific evaluations in Excel in which you can define multiple conditions in the same function. Therefore, the return value will be “TRUE” if either one of the conditions is met. We will explain when and how to use the IF OR formula in Excel using simple examples.
Organizations restrict access permissions in systems to protect sensitive data from unauthorized access and modification. However, assigning access permissions to users individually is a high-maintenance and error-prone process. In the case of role-based access control (RBAC), permissions are assigned based on previously assigned roles. Here, we explain how role-based access control works.
From Ubuntu to Debian, there is a wide range of Linux distributions to choose from. In 2015, Intel introduced another alternative which is specially designed for Intel hardware: the cloud operating system Clear Linux. Since then, Clear Linux OS has become a popular choice as a desktop operating system and for use with hardware from other manufacturers. Here, we provide a more detailed introduction...