Linux

NetworkManager Tools NetworkManager is a system service in Linux distributions that manages network devices and connections. Here are some tools you can use to control NetworkManager and refresh the network interface configuration: nmcli: This is a command-line tool for interacting with NetworkManager. You can use it to control connections, devices, and other networking aspects. To …

Introduction to the nmcli Command The nmcli command is a powerful command-line tool in Red Hat Enterprise Linux (RHEL) used to manage network connections through the NetworkManager service. It provides a comprehensive interface for configuring, monitoring, and troubleshooting various network aspects, from basic Ethernet connections to advanced features like bonding, VLAN tagging, and more. Key …

When I first encountered the Nmstate API, I was intrigued by its declarative approach to network configuration. As someone who has spent time managing network settings on Red Hat Enterprise Linux (RHEL) systems, I often found myself frustrated with the manual processes involved in setting up network interfaces. Nmstate promised a more streamlined way to …

In my experience with RHEL 9, I’ve found it to be an incredibly robust platform for managing networking configurations. One of the standout features is NetworkManager, which I’ve relied on extensively. This system service effectively oversees all network devices and connections, making my life much easier. What I appreciate most is the variety of methods …

The VI editor is a powerful text editing tool that has been a staple in the UNIX and Linux environments for decades. While many users are familiar with its basic functionalities, such as opening files and entering text, mastering advanced commands can significantly enhance your productivity and editing efficiency. This guide aims to delve into …

Linux Tips Mastering Linux Management Basic VI Editor Commands To start vi: Example: vi letter will open a new file called letter to edit, or if letter already exists, open the existing file. Command Effect vi filename Edit filename starting at line 1 vi +n filename Edit filename beginning at line n vi +filename Edit …

Linux Tips Mastering Linux Management Basic Shell Navigation Commands To navigate directories in the shell: Example: cd Documents will change the current directory to Documents. Command Effect cd .. Move up one directory cd ~ Change to the home directory cd – Switch to the previous directory ls -l List files in long format ls …

Linux shell script Tips Mastering Linux shell script Shebang Line To specify the script interpreter: Example: #!/bin/bash at the top of your script tells the system to execute the script with bash. Command Effect #!/bin/bash Specifies bash as the interpreter for the script Variable Declaration To declare a variable: Example: myVar=”Hello World” assigns the string …

In Linux, grep is a powerful text search tool that helps you find specific strings within files. Its basic syntax is grep [options] ‘search_string’ filename. For example, if you want to find all lines containing the word “error” in a file named example.txt, you can use the following command: grep ‘error’ example.txt You can also …