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OpenNMS is an open-source monitoring system that helps system administrators monitor their networks, servers, and applications. It provides comprehensive monitoring capabilities that allow administrators to detect and resolve issues before they become critical. In this article, we'll discuss how to add hosts in OpenNMS monitoring server. What are Hosts? Hosts are the devices or servers that you want to monitor. It could be a physical device or a virtual machine. In OpenNMS, hosts are added to the system so that the system can monitor them for any issues that may arise. Adding a host to OpenNMS is a simple process ... Read More
In today's world, email is a crucial tool for communication, both in personal and professional settings. However, it can also be a target for malicious attacks such as viruses and spam. As a result, it is vital to secure your mail server against these threats. One way to do this is by adding antivirus and spam protection to your Postfix mail server with ClamAV and SpamAssassin. In this article, we will guide you through the steps to add ClamAV and SpamAssassin to your Postfix mail server, and show you how to configure them to work together to protect your mail ... Read More
PhpMyAdmin is a popular web-based application used to manage MySQL databases. It is widely used by web developers, system administrators, and other IT professionals. However, with its widespread popularity, PhpMyAdmin has become a popular target for cybercriminals who attempt to exploit vulnerabilities in the login interface to gain access to sensitive data. Therefore, it is essential to add an extra layer of security to the PhpMyAdmin login interface to prevent unauthorized access. In this article, we will discuss how to add an extra layer of security to the PhpMyAdmin login interface with several sub-headings and examples. Why Do You Need ... Read More
Git is a popular version control system that enables you to manage your source code, track changes, and collaborate with others. It also helps you keep a record of every change made to your codebase, including the creation of new directories. However, sometimes you may need to add an empty directory to your Git repository, which may seem challenging at first glance. In this article, we will explore how to add an empty directory in Git. What is an Empty Directory in Git? Before we dive into the process of adding an empty directory in Git, let's first understand what ... Read More
Remote Desktop is a handy tool that allows you to access your computer from a different location, using another device. It is very useful, especially for remote workers, who need to access their work computer from home or any other location. The most common way to access a remote desktop is through a client software installed on the device, but there is an easier way to access it: using a browser. In this article, we will show you how to access remote desktop from a browser using TightVNC. What is TightVNC? TightVNC is a free remote control software package that ... Read More
If you're a Linux server user, you know how important the command line interface is. The terminal is where you can execute commands to control and manage your server. However, sometimes accessing the terminal can be a hassle, especially if you're on a remote machine or don't have a terminal client installed. That's where Wetty comes in. Wetty is a web-based terminal emulator that allows you to access your Linux server terminal through your web browser. In this article, we'll go over how to set up and use Wetty to access your Linux server terminal. What is Wetty? Wetty is ... Read More
Linux is a popular operating system that is used by millions of people worldwide. It is known for its open-source nature, flexibility, and security. There are many different Linux distributions, each designed to meet the needs of different types of users. In this article, we will take a look at 15 Linux distributions and their targeted users. Ubuntu Ubuntu is a popular Linux distribution that is targeted towards a wide range of users, including − Desktop Users − Ubuntu aims to provide a user-friendly and polished desktop experience for general users who are looking for a free and open-source ... Read More
If you're using a Linux operating system, it can be helpful to gather system and hardware information to troubleshoot any issues or simply to learn more about your system's performance. Luckily, there are plenty of built-in commands in Linux that allow you to easily collect this information. In this article, we'll cover some of the most useful Linux commands for gathering system and hardware information, along with examples of how to use them. uname The uname command displays basic information about your system, including the operating system name, kernel version, and processor architecture. To use the uname command, simply open ... Read More
Linux is an operating system that has become increasingly popular over the years. It's known for its stability, security, and flexibility, making it a favorite among developers and system administrators. One of the great things about Linux is that it comes with a lot of powerful commands that can make your life easier. In this article, we'll be discussing some of the lesser-known but useful Linux commands. Watch Command The watch command is a simple but powerful command that allows you to watch the output of a command or script every few seconds. This is useful when you want to ... Read More
Linux is a powerful operating system that is widely used in the world of software development, web hosting, and cloud computing. Linux has many commands that can help you perform various tasks, but some commands are not commonly used or known to many people. These lesser-known commands can be very useful and save you time and effort. In this article, we will explore some of the effective but lesser-known Linux commands. 'rename' command The 'rename' command is used to rename multiple files at once. The syntax for this command is as follows − rename 's/oldname/newname/' files Here, 'oldname' is ... Read More