Author: Rahul

Google Chrome is a popular web browser that is widely used for accessing the internet. It is known for its fast performance, security features, and support for a wide range of web technologies. If you want to use Google Chrome on your Ubuntu or Debian system, you can install it using the steps described in this article. There are two methods for installing Google Chrome on Ubuntu and Debian: using the official Google Chrome repository and downloading the Debian package from the Google Chrome website. In this article, we will cover both methods. Method 1: Downloading the Debian Package from…

In computer networking, the term “localhost” refers to the current device used to access it. It is used to access the network services that are running on the host via the loopback network interface. Using the loopback interface bypasses any local network interface hardware. The term “localhost” is derived from the combination of the words “local” and “host”. The word “local” refers to the device itself, while the word “host” refers to the device hosting a service or application. Therefore, “localhost” literally means “the local host.” In most cases, localhost is used to access the network services that are running…

OpenCV (Open Source Computer Vision) is a free and open-source library of computer vision and machine learning algorithms that can be used to process and analyze images and video. It is widely used in a variety of applications, including object detection, image, and video processing, and augmented reality. In this article, we will cover two different methods for installing OpenCV in Python: using “PIP” (the Python Package Manager) and using “Anaconda” (a free and open-source distribution of Python and R for data science and machine learning). Method 1: Installing OpenCV using PIP PIP is the default package manager for Python.…

Deleting the last few commits from a Git repository is a relatively simple process that can be accomplished with a few simple commands. In this guide, we will explain how to delete the last few commits from a git repository, as well as discuss why this might be necessary. We will also provide step-by-step instructions for removing the last few commits from a repository, as well as common issues that may arise in the process. By the end of this guide, you should have a good understanding of how to delete the last few commits from a Git repository. Delete…

In Bash, you can store the standard error output of a command to a variable by using the `2>&1` operator and the `$()` command substitution syntax. Here `2>` redirects the error message to &1`, that represent to standard output. In the case of bash shell works as the standard output device. For example, to store the standard error output of the `ls` command to a variable named errors, you can use the following command: errors=$(ls non-existent-file 2>&1) Alternatively, you can use the `$?` special parameter to store the exit status of a command to a variable. The exit status is…

Zsh, or the Z Shell, is a powerful and flexible command-line shell for Unix-like operating systems, including Linux and macOS. It offers many features and improvements over the default bash shell, including improved command completion, spelling correction, and customizable prompts. In this article, we will learn how to install and configure Zsh on Ubuntu and Debian systems. Some of the benefits of using ZSH over Bash include: Enhanced command completion: ZSH offers better command completion than Bash, including the ability to use tab completion for options and arguments. More powerful globbing: ZSH has a more powerful globbing (wildcard matching) system…

On Linux, you may want to find large files or directories that are taking up too much space. This guide will show you simple steps to search for these large files and directories using terminal commands. Using the du Command The du command (disk usage) is useful for checking the size of files and directories. Here’s how to use it: Open the Terminal: Open the terminal window on your Linux system. Search for Large Directories: To check which directories are taking up the most space, use the following command: du -h –max-depth=1 /path/to/directory Example: du -h –max-depth=1 /home/user This command…

Bash is one of the most popular shells and is used by many Linux users. One of the great things you can do with Bash is removed duplicate lines from files. It’s a great way to declutter a file and make it look cleaner and more organized. This can be done with a simple command in the Bash shell. All you have to do is type in the command “sort -u” followed by the name of the file. This will take the file and sort the content, then use the command “uniq” to remove all duplicates. It’s an easy and…

In FirewallD, the `–source` option allows you to specify a network or an IP address as the source for applying the rules. It is used to specify the network or IP address that is allowed to access the port or service that is being opened. The `–add-source` option is used to specify multiple networks or IP addresses as the source for the rules being applied. It is used in conjunction with the `–permanent` option to add multiple sources to a rule already configured in the firewall. Open Port for Single IP/Network For example, the following command will open port `80`…

In a high-traffic website, it’s essential to ensure that the web server can handle a large number of requests without causing server overload or poor performance. One way to achieve this is by using a reverse proxy server in front of the web server. A reverse proxy server, such as Nginx, can handle requests from clients and forward them to the web server, offloading some of the work and improving performance. In this article, we will discuss how to configure Nginx as a reverse proxy in front of Apache to optimize high-traffic websites. Step 1: Installing Nginx The first step…