Finding the fastest Debian mirror can significantly improve the speed of package installations and updates. This is where netselect-apt shines, a handy tool for Debian users that automates the process of selecting the quickest server based on network latency and bandwidth. By using this tool, you can ensure that your system updates and installs packages as efficiently as possible.
This tutorial will guide you through the basics of the sudo command, which enables a permitted user to execute a command as the superuser or another user, as specified by the security policy in the sudoers file. We’ll explore not only the installation and basic usage of sudo but also dive into configuring detailed permissions through the sudoers file, ensuring both flexibility and security in administrative operations. You’ll learn how to define access for individual users and groups, customize command execution environments, and implement security practices that restrict or log usage. By understanding these configurations, you’ll be able to effectively manage privileges on your system, safeguarding it against unauthorized changes while facilitating necessary administrative tasks.
This article explains how to create a new sub-directory in Linux using the mkdir command. Whether you are a beginner or an experienced user, understanding this basic file system operation is essential for managing directories and organizing files effectively.
Expect is a free and open source utility we can use to automatically answer to interactive prompts according to scripts which includes expects/sends commands. In this tutorial, we learn how to install expect on the most used Linux distributions, how to use it to automatically answer to interactive prompts, and how to generate expect scripts with autoexpect.
Documenting how an application works, its purpose, and its intended usage is really important, even if it is just a simple shell script we are talking about. To ease code maintenance in the most basic cases, documentation can be embed directly inside scripts. In this tutorial we learn how to include Pearl’s Plain Old Documentation syntax (POD) in bash scripts, and how to convert it to various formats using pod2 utilities such as pod2man and pod2html.
The Common Gateway Interface (CGI) is an essential technology that serves as a link between web clients and servers, enabling the execution of scripts and programs on a web server. Although newer technologies have largely replaced CGI, it remains a useful tool for Linux system administrators for quick system monitoring and administrative tasks via web browsers.
Quadlet is a free and open source tool written in C which let us create and run Podman containers under Systemd. The tool let us declare containers, volumes, networks, and their relationships, using dedicated Systemd units.
When the var partition full problem occurs, it can disrupt system operations and applications due to lack of space for logging, caching, and other dynamic data handling tasks that occur in the /var directory. This article provides a comprehensive guide on how to relocate the /var directory to another partition to mitigate issues with space constraints. This procedure is crucial for maintaining the integrity and performance of your systems.
You have two options when configuring the IP address on your Ubuntu Server, and that is either a static IP address or DHCP. A static IP address allows you to manually select your IP address by configuring it on the Linux system, whereas DHCP relies on the router or DHCP server to lease you an IP address – either a reserved one or the next available one that is currently free, depending on the setup.
Linux systems support various file types, each designated by a unique character in directory listings, crucial for system management. These characters, such as ‘-‘ for regular files and ‘d’ for directories, help users quickly discern the nature of each file at a glance. This tutorial will guide you through identifying and creating different types of files in Linux, providing practical skills for optimizing your workflow and enhancing your system’s organization. By mastering these concepts, you will gain a deeper understanding of how Linux structures its filesystem and how you can manipulate it to your advantage.
This article explores the process of managing the cache in a BIND DNS server, specifically focusing on how to view and clear the cache effectively. Managing cache is crucial for maintaining the performance and accuracy of DNS resolutions in your network. Efficient cache management ensures that your DNS server can handle requests rapidly while minimizing the likelihood of outdated or incorrect data affecting user queries. Furthermore, it assists in optimizing resource usage, which can significantly enhance the overall stability and reliability of network services.
Netplan is a utility developed by Canonical, the company behind Ubuntu. It provides a network configuration abstraction over the currently supported two “backend” system (“renderer” in Netplan terminology): networkd and NetworkManager. Using Netplan, both physical and virtual network interfaces are configured via yaml files which are translated to configurations compatible with the selected backend.