Linux File System Hierarchy

                            

All files on a Linux system are stored on file systems which are organized into a single inverted tree of directories, known as a file system hierarchy. This tree is inverted because of the root of the tree is said to be at the top of the hierarchy, and the branches of directories and subdirectories stretch below the root.

What is Linux

                                 

You probably know only Windows, but now you want to use Linux because you read that Linux is better than Windows as it’s more secure and you don’t have to buy a license to use Linux.

Linux has been around since the mid-1990s and has since reached a user-base that spans the globe. Linux is all over the place: It’s in your phones, your thermostats, in your cars, refrigerators, and televisions. It also runs most of the Internet, all the world’s top 500 supercomputers, and the world’s stock exchanges.

How to Reset the Forgotten Root Password in RHEL/Centos 8

First, boot into your RHEL/Centos 8 system and select the kernel you wish to boot into. Next, interrupt the booting process by pressing ‘e’ on your keyboard.

On the next screen, locate that begins with kernel= and append the parameter rd.break and press Ctrl + x. On the next screen, ensure that you remount the sysroot directory with read and write permissions. By default, it is mounted with read-only access rights indicated as ro.

Linux Alternatives VirtualBox

VirtualBox is one of the most popular virtualization programs out there. It comes packed with a lot of powerful features and is a free open source program under the GNU General Public License. But while VirtualBox is fantastic, it isn’t the only virtual machine option out there.

1. KVM (Kernel-Based Virtual Machine)

KVM is a platform that uses Linux as the host system and can run other Linux distros, Hackintosh, and Windows. This VM is one of the more popular platforms out there right after VirtualBox and offers a stable and reliable substitute. Not only that, but KVM has been around for a long time and hosts an excellent set of features and customizability.