awk is a powerful and versatile text processing tool available in Unix-like operating systems, including Linux. It is primarily used for extracting and manipulating data from text files, particularly when the data is organized in a structured format. awk is often used for tasks such as data extraction, report generation, and data transformation. The basic
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The find command in Linux is a powerful utility used to search for files and directories within a specified directory hierarchy based on various criteria. It’s an essential tool for system administrators and users who need to locate specific files or perform batch operations on files that match certain conditions. The find command provides a
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The mv command in Linux is used to move or rename files and directories. It stands for “move,” but it can also be used to rename files and directories within the same location. The mv command is a powerful tool that allows you to manipulate files and directories efficiently. Here’s a detailed explanation of how
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The cp command in Linux is used to copy files and directories from one location to another. It stands for “copy” and is an essential tool for managing and duplicating files. The basic syntax of the cp command is as follows: Here, source represents the file or directory you want to copy, and destination is
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The ls command in Linux is used to list the files and directories in a specified directory. It provides various options and arguments to customize the output and the information displayed. Here’s a detailed explanation of the ls command: Basic Usage: Options: Examples: Note: The above examples cover some commonly used options of the ls
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As a DevOps practitioner, having a solid understanding of the Linux command line is crucial. The command line interface (CLI) provides you with powerful tools to manage and administer your CentOS server efficiently. In this article, we will cover some fundamental Linux commands that every beginner in the world of DevOps should master. These commands
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In this tutorial we will go over how to encrypt a text file that we can store in public storage without any security concerns. Suppose you are running an application in a cloud platform, and you are running daily backup of SQL files and want to store it securely in block storage somewhere in the
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In this tutorial, I will demonstrate how to setup web hosting for ASP.NET Core 2.1 application in CentOS 7 Linux operating system using NGINX web hosting platform. Before we proceed, let’s make sure the system is up-to-date. Follow below steps. Setup NGINX and Firewall If it returned running. That means firewalld service is in running
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To execute admin actions using a regular user, you need to create a sudo privileged account. By default, in CentOS, any user part of a wheel group is granted access to execute privileged commands. Follow the below steps to create a sudo account. NOTE: you can replace johnsmith with your preferred username. You will be
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In this tutorial, we will use kubeadm to configure a Kubernetes cluster on CentOS 7.4. IMPORTANT NOTE: Ensure swap is disabled on both master and worker nodes. Kubernetes requires swap to be disabled in order for it to successfully configure Kubernetes Cluster. Before you start setting up Kubernetes cluster, it is recommended that you update
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