If you have a Mac and your user account has administrator privileges, you’re able to access things and perform actions that aren’t available to users that don’t have admin accounts.
But even accounts with admin privileges are limited in the things they can access and do on a Mac.
However, there’s a special user account with the username “root” that you can use to access and make changes to any area of the file system that isn’t write-protected by your Mac’s System Integrity Protection system. [Read more…]
Question from Linda: 
These days most people are aware that viruses, spyware, adware and other types of malware are lurking in the shadows of the Internet, just waiting for an opportunity to sneak onto their computers’ hard drives and perform all kinds of mischief.
Question from Ray:
Have you ever visited a web page that was difficult to read because the text was either too small or too large?