In Windows, applications run by default without administrator permissions. They have the same rights as a standard user account: they can not make changes in the operating system, in system files, and in system registry keys. They can also not change anything that is related to other user accounts. Applications can only change their own files and registry keys or the settings and registers of the...
User Account Control is a security feature of the Windows operating systems introduced in Windows Vista. Those who have ever used a Linux operating system know that they require an administrator’s approval before installing the programs and making changes to the system settings. Well, the same thing is making the User Account Control in Windows and therefore, for security reasons, I...
Windows 10 comes with beautiful pictures for the desktop background and lock screen. We especially like the background image used for Windows 10 May 2019 Update. If you want to find the location of these images on disk, you can use them as wallpapers on other PCs and devices, you just have to read this article. Where do we see the background images used by Windows 10 Windows 10 uses a set of...
Mail and Calendar applications which are preinstalled in Windows 10 have been updated with a new functionality: the dark mode. The dark theme has been available in Windows 10 for some time already, but Mail and Calendar have only partially implemented it. It now applies to all displayed items and allows you to set it independently from the rest of the operating system and other apps you use...
When you start a desktop application that needs administrative permissions, you’ll see a prompt called User Account Control (UAC) asking you: “Do you allow this app to make changes to your PC?”. This prompt also appears when you want to change a system setting that requires administrative permissions. User Account Control (UAC) is a Windows security feature that exists since...
On May 21, 2019, Microsoft began distributing the May 2019 Update for Windows 10 through Windows Update. This update is also known as Windows 10 version 1903 or 19H1. It is not received by all computers at the same time. If you do not have the patience until Microsoft will distribute your update, you can use the Windows 10 Update Assistant. Here’s how to install May 2019 Update on all your...
Everything in a Linux system happens in a very strict way. Nothing is accidental. Let’s have a look at the tables below: The following table shows us the codes for granting access rights to a file: Each user of a Linux system has a name (for example: mvps); this user is associated with certain groups; to see the groups in which a particular user is located, there will be run the following...
When Windows Vista was released, UAC was the most criticized and misunderstood security tool in this operating system. Although it is essential for good security, many people have chosen to disable UAC. That’s why we want to explain in this article what the UAC is, how it works and the benefits of its use in Windows. What is the User Account Control in Windows? User Account Control (UAC) is...
To change the attributes (permissions) of a file or folder, use the chmod command: chmod new_permission filename Example (see how the attributes of the ubuntu.jpg file changed from 640 to 777): chmod 777 ubuntu.jpg ls -l -rwxrwxrwx 1 mvps mvps 37126 Jun 25 03:15 ubuntu.jpg Protecting files with chmod Changing the owner of a file This can be very simple to do from the terminal using the...
What is ACL? POSIX Access Control List (ACL) is a Linux feature that allows different permissions for different users or different groups, even if they do not match the original owner or the owner group of that file or directory. Actually, with ACL we can add more granular permissions that go over the well-known ugo/rwx controls. For example, John created a file. He does not allow anyone in the...