The systemctl list-dependencies command in Linux, using systemd, is a powerful tool for exploring the dependency relationships between various system units. In systemd, units can have dependencies on each other — for example, one service might require another service to be running, or a target unit might depend on multiple services to function properly. This …
Linux
In Red Hat Enterprise Linux (RHEL), the concept of targets plays a pivotal role in system initialization and systemd, the default system and service manager. A target in RHEL refers to a specific system state that determines which services, processes, and resources should be active or inactive during system boot-up or runtime. Targets are part …
A few months ago, I was managing a Linux server that hosted several critical applications, including a PostgreSQL database. As part of routine maintenance, I was tasked with setting up automated backups for the database. Everything was going smoothly, until one day I noticed that the backup process was hanging indefinitely and consuming system resources. …
The CentOS Project has officially announced the release of CentOS Stream 10, codenamed “Coughlan.” Now available for download, this release brings a host of exciting new features, software updates, and improvements, continuing CentOS Stream’s evolution as a rolling-release distribution closely aligned with Red Hat Enterprise Linux (RHEL). With support guaranteed until at least 2030, CentOS …
In Linux, users are crucial components of the system. They are assigned various permissions and privileges that determine what they can do on the system. Understanding how to list all users on a Linux system is a key administrative task, whether you’re managing a single machine or a large network of servers. This article will …
Linux is an essential skill for anyone pursuing a career in IT, cybersecurity, development, or system administration. With its open-source nature, Linux powers everything from web servers and data centers to smartphones and cloud environments. But with so many different Linux distributions (distros) available, choosing the right one to learn can be daunting. The best …
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 …