Introduction If you’re managing SUSE 15 machines, you might encounter a frustrating issue where repositories fail to refresh, and SUSEConnect shows all products as “Not Registered.” This problem can prevent package installations and disrupt your operations. While SUSE’s public documentation provides troubleshooting steps, they may not always resolve the issue. In this guide, we’ll walk … Read more
Are you a Linux enthusiast looking to better understand file ownership on your system? Whether you’re new to Linux or a seasoned user, knowing how to find files you own (or don’t own) can be a game-changer. It’s not only a great way to manage your files but also helps with security, permissions, and system … Read more
If you’re someone who frequently works in the terminal, you know how repetitive some commands can get. Typing long commands every day can be tedious and time-consuming. But did you know there’s a simple way to automate these tasks and save yourself a lot of effort? Enter aliases—a powerful feature of the Linux shell. In this … Read more
What Are systemd Timers? systemd timer is a modern and powerful replacement for traditional cron jobs, designed to schedule and trigger systemd service units. It simplifies automation on Linux by providing enhanced flexibility, logging, and dependency handling compared to the classic cron system. Why Use systemd Timers Instead of Cron? systemd timers offer several advantages over … Read more
Introduction Ever wondered how to find files in a directory that haven’t been touched in ages? Whether you’re cleaning up old files, archiving data, or checking for stale files, Linux’s find command is your go-to solution. In this tip, we’ll show you how to list files by their age in Linux using a simple yet powerful command. … Read more
Introduction The OOM Killer (Out-of-Memory Killer) is a critical mechanism in Linux that steps in when the system runs out of memory. It terminates processes to free up memory and keep the system running. While it’s a lifesaver in low-memory situations, its behavior can sometimes seem arbitrary or confusing. To help you understand the concept behind the … Read more
Introduction If you’ve worked with Linux systems, you may have noticed directories with names like /etc/logrotate.d/ or /etc/cron.d/. These .d folders follow a convention used by many services, from MariaDB to SSH, and from the kernel to PAM. Once you understand their purpose, you’ll start seeing them everywhere—such as mariadb.conf.d, sshd_config.d, modprobe.d, and pam.d. But why does a system need directories like /etc/logrotate.d/ for placing configuration files … Read more
Introduction In SUSE Linux Enterprise Server (SLES) clusters, the hb_report command is an essential tool for gathering detailed diagnostic information about a High-Availability (HA) cluster. This tool is crucial for troubleshooting cluster issues, identifying failures, and analyzing the health of the cluster environment. Whether you’re an administrator working on an HA cluster or a support engineer diagnosing issues, hb_report simplifies the process by … Read more
Linux provides various commands for text formatting and editing, and one particularly useful command is the nl command. This tool allows you to add line numbers to each line of a text file or input, making it easier to read and organize content. What Does the nl Command Do? The nl command displays the contents of a text file with line numbers added … Read more
Troubleshooting Linux systems often requires browsing logs to identify issues effectively. Knowing the right keywords to search for can help narrow down problems quickly. This guide categorizes common issues and provides relevant keywords and log file suggestions for Linux systems, whether in cloud environments or on-premises. 1. Authentication and Access Issues Keywords: Logs to Check: … Read more