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Articles by Satish Kumar
Page 38 of 94
25 Practical Examples of Linux Find Command
The Linux find command is a powerful utility that enables you to search for files and directories on your system. The command searches for files and directories based on various criteria, including file name, type, size, date modified, ownership, and permissions, among others. This article provides 25 practical examples of how to use the Linux find command to search for files and directories based on specific criteria. Each example demonstrates real-world scenarios that system administrators and users encounter daily. Basic File and Directory Search 1. Find Files by Name The simplest way to use the Linux ...
Read MoreARP Commands
ARP (Address Resolution Protocol) is a networking protocol that maps network addresses, such as IP addresses, to physical MAC addresses. It is a fundamental component of network communication, enabling devices to locate each other on the same network segment. The arp command provides various options for viewing and managing the ARP cache. How ARP Works When a device needs to communicate with another device on the same network, it broadcasts an ARP request asking "Who has this IP address?" The target device responds with its MAC address, and this mapping is stored in the ARP cache for future ...
Read More25 Things to Do After Minimal RHELCentOS 7 Installation
After installing minimal version of RHEL/CentOS 7, you might be wondering what to do next. The minimal installation provides you with a basic operating system, but you still need to install additional packages and configure the system to suit your needs. In this article, we will explore 25 essential tasks to do after a minimal RHEL/CentOS 7 installation to help you get started. System Updates and Core Setup 1. Update the System First thing to do after installing a minimal RHEL/CentOS 7 is to update the system. This ensures you have the latest security updates and bug ...
Read More25 Useful 'ps Command' Examples for Linux Process Monitoring
The ps command is a powerful tool used for monitoring processes in Linux operating systems. It stands for process status and displays information about processes currently running on a system. This information is useful for troubleshooting, optimizing performance, and identifying potential security issues. Below are 25 useful ps command examples for effective Linux process monitoring. Basic Process Listing Display All Running Processes ps aux This displays all processes with detailed information including PID (process ID), CPU usage, memory usage, user, and command. Show Process Tree Structure ps auxf The ...
Read More25 Ways to Validate Configuration Files or Scripts in Linux
As a Linux administrator or developer, ensuring that configuration files and scripts are valid is crucial for smooth system operation. Configuration files and scripts define the behavior and settings of software applications and services. A mistake in these files can cause applications to fail or behave unexpectedly. This article presents 25 essential validation techniques to maintain robust Linux systems. 1. Syntax Check Syntax checking examines code for syntax errors that violate programming language rules. This basic validation catches common mistakes like missing semicolons or extra braces. # Check shell script syntax shellcheck script.sh # Check ...
Read More25 Zypper Commands to Manage 'Suse' Linux Package Management
Zypper is the command-line package manager for SUSE Linux and openSUSE distributions. It provides a comprehensive set of tools to install, update, remove, and manage software packages on your system. This article covers 25 essential Zypper commands that will help you efficiently manage your SUSE Linux package management system. Basic Package Operations 1. Installing Packages To install packages using Zypper − sudo zypper install For example, to install Firefox browser − sudo zypper install firefox 2. Removing Packages To remove a package using Zypper − ...
Read MoreHow to Add Linux Host to Nagios Monitoring Server Using NRPE Plugin
Nagios is an open-source monitoring system that helps system administrators monitor the performance and availability of various network resources, including hosts, services, and network devices. NRPE (Nagios Remote Plugin Executor) is a plugin used to monitor remote hosts or devices from the Nagios server by executing monitoring plugins on the remote host and returning results to the Nagios server. This guide demonstrates how to add a Linux host to your Nagios monitoring infrastructure using the NRPE plugin for comprehensive system monitoring. Prerequisites Before beginning the setup, ensure the following requirements are met: Nagios Core installed ...
Read MoreHow To Work With Ansible Variables And Facts?
Ansible is a widely-used open-source tool that helps in automating software provisioning, configuration management, and application deployment. One of its powerful features is the ability to use variables and facts, which can simplify your playbooks and tasks, and allow you to design more dynamic, flexible, and reusable automation scripts. In this article, we'll dive into how to work with Ansible variables and facts, showcasing several examples and their corresponding output. Understanding Ansible Variables Variables in Ansible allow for the storage and manipulation of values, which can be utilized across multiple tasks or even different playbooks. Variables can ...
Read More25 Best File Managers and Explorers [GUI + CLI] for Linux
Linux offers an extensive collection of file managers and explorers that cater to different user preferences and system requirements. This comprehensive guide explores 25 of the best options available, covering both graphical (GUI) and command-line (CLI) solutions to help you find the perfect file management tool for your workflow. GUI File Managers Nautilus (GNOME Files) Nautilus serves as the default file manager for GNOME desktop environments and comes pre-installed with most GNOME-based Linux distributions. This intuitive file manager provides seamless navigation through files and folders with support for tabs, bookmarks, integrated search functionality, and cloud storage integration. ...
Read MoreHow to Add New Fonts in Fedora
Fedora is a popular Linux distribution that offers flexibility in customizing your system, including the ability to add custom fonts. Fonts play an important role in the overall look and feel of documents, presentations, and applications. This article will guide you through the process of installing new fonts in Fedora. Why Add New Fonts in Fedora? While Fedora comes with a good collection of default fonts, you may need additional fonts for specific purposes such as graphic design, coding, or multilingual support. Custom fonts can add a personal touch to your work and improve readability for different use ...
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