From smartphones to cars, supercomputers and home appliances, home desktops to enterprise servers, the Linux operating system (kernel) is everywhere.

How to disable or enable OS Prober from the Grub?


Linux has an OS Prober feature that allows us to choose other operating systems installed in the system using Grub. By default on the latest version of Linux, it’s disabled; on the earlier versions, it’s enabled. In this article, I’ll show you how to disable or enable OS Prober from the Grub in Linux (Debian/Ubuntu). […]

How to install Nginx on Fedora?

Image of NGINX, a web server.

Nginx is an open-source web server (free HTTP Server software), in addition to its HTTP Server capabilities, it can also function as a Proxy Server for email (IMAP, POP3, and SMTP) and a Reverse Proxy and Load Balancer for HTTP, TCP, and UDP Servers. As of today, Nginx has been used by far more than […]

How to search files by extension in Linux?


Want to search files using a file extensions like: *.css, *.js, *.php, *.txt, or *.zip etc. in Linux. Use the following command. sudo find /home/user/Documents -type f -name “*.css” Let’s understand the above command. sudo enables administrative access. find is a find, query, or search instruction. /home/user/Documents is working directory or a directory where you […]

How to clean the Linux system?


No matter what Linux system or distribution you use, over time it is going to fill with lots of files like unnecessary caches, dependencies, and temporary files. It may happen often if you have a habit of trying out new or alternative applications every day. You’ll be surprised to know that major Linux users do […]

Unable to install “Package”: snap “Package” has “install-snap” change in progress

Ubuntu introduced snap as default package source to install latest applications and software. But it is new and slow as per my experience, whenever I try to install some big application or one that has slow network from backend takes hell lot of time that ultimetly I get error when try to install once more. […]

Linux ls command

In Linux, command line syntax “ls” stands for list. List command (ls) show the full list or content of your directory. List all the files and folders. Just type ls and press the enter key. The whole content will be shown. atulhost@ubuntu:~$ ls Desktop Documents Downloads Music Pictures Videos List all the files and folders, […]

Unable to acquire the dpkg frontend lock

If you are trying your hands on Linux based OS and getting following error, means you are unable to allow current user a root privilege. A root or root-equivalent user can only get rid of this error. E: Could not open lock file /var/lib/dpkg/lock-frontend – open (13: Permission denied)E: Unable to acquire the dpkg frontend […]

How to customize Ubuntu Dock to float icons in center? Just like macOS!

Ubuntu dock

Everyone likes to have a good-looking desktop dock that has most used apps in it. I like Ubuntu’s Dock too, but it’s more user-friendly, but most of us prefer it on the bottom side just like we see on macOS. I like to see Ubuntu Dock at bottom side instead of left side, and Ubuntu […]

Repository changes its ‘Suite’ value from ‘testing’ to ‘stable’

While apt update you may get repository no longer has a release file error, it happens when a repository owner changes its suite value or version. Do not panic if this is the first time you are encountering this kind of issue. Simply allow the release information to get changed by adding below small flag […]

Unable to lock the administration directory (/var/lib/dpkg/) is another process using it?

If you being a root or root privileged user who tried to install and interrupt the installation in mid of it, then you’ll see this error when you try to resume the installation again. But below message will appear as: E: Could not get lock /var/lib/dpkg/lock – open (11 Resource temporarily unavailable) E: Unable to […]