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If you’ve tried to install Ubuntu on your computer but it has failed, you can reinstall it easily by following the steps below. To begin with, make sure you’ve backed up your personal files in a removable drive. Once you’ve done this, launch the Ubuntu installer on a USB drive, disk, or external storage. If …

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The physical memory of a Linux system is divided into sections that are called “pages” in the kernel. These pages are composed of millions of variables and maintain information about every page in the physical memory. Each page frame is designated with a unique number. In Linux, the kernel uses 64-bit wide memory holes. When …

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What is Getent in Linux? is a Unix command used to lookup the name and group information of users. It is used to manage groups and passwords on a host. It was written by Thorsten Kukuk for the GNU C Library. This article discusses how getent can be useful. The command returns a list of …

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You might be wondering how to concatenate in Unix. In Unix, concatenation is a common way to add two strings together. It’s also useful for performing simple math operations, such as incrementing a number. In a greeting script, you might use the concatenate operator to add the user’s name to a greeting. You can also …

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