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This article will explain how to generate a MD5 Checksum on a file or list of files on Linux and how to validate a file against a known checksum. We’ll give you easy-to-follow examples as well as explanations. Let’s get started! What is a MD5 Checksum? The MD5 checksum is a widely used cryptographic hash … Read more
In the digital world, file compression is a fundamental technique to reduce file sizes for storage efficiency and faster transmission. Among various compression formats, the .tar.bz2 format stands out for its high compression ratio, especially useful for packaging a collection of files or directories into a single file. This guide delves into the process of … Read more
As virtualization technology becomes increasingly popular, tools like VMware Server have found their way into the heart of many IT infrastructures. VMware Server 2.0, a robust virtualization software, allows you to run multiple operating systems on a single host computer concurrently. However, before harnessing its powerful features, you need to know how to log in. … Read more
This article will introduce you to uTorrent, which is a freeware torrent client. uTorrent is an extremely lightweight application ( less tan 300 kb) that is free of any adware and spyware. Setting Up uTorrent 1. Download & Install uTorrent 2. Start the uTorrent application 3. You must ensure that the port uTorrent runs on … Read more
FTP (File Transfer Protocol) servers are a fundamental aspect of data exchange in networked systems. Particularly on Linux, an open-source platform known for its robustness and adaptability, FTP servers serve as powerful tools for managing and transferring files across network connections. From software development to web hosting, FTP servers allow users to upload, download, and … Read more
Appending data to a file is one of the most basic yet useful tasks in Linux, especially for system admins and developers. Whether you’re working on scripts, logs, or just need to add some text to an existing file, Linux offers several straightforward ways to do this. Here, we’ll walk through five methods you can … Read more
This article will explain how to SCP (Secure Copy) files using PHP5. SCP is a secure method of copying files from one host to another using the SSH protocol. Here is a snippet of working code to help get you started! $hostname = “target_host”; $username = “root”; $password = “password”; $sourceFile = “test.txt”; $targetFile = … Read more
This guide will take you through the basics of RPM and show you how to install it on different Linux server distributions: Ubuntu, CentOS, Fedora, and Red Hat Enterprise Linux (RHEL). In the world of Linux, mastering the art of installing, upgrading, and removing software packages is crucial. These tasks are generally handled by what’s … Read more
This article will show you to how to list of all installed RPM packages on Linux distributions like Ubuntu, CentOS, RHEL, and Fedora. We’ll show you how to solve this using the rpm and dpkg commands. RPM (Red Hat Package Manager) is used by distributions such as CentOS, RHEL, and Fedora for package management. Ubuntu, … Read more
This article will show you how to use the tail command to automatically view data that is appended to a file. This is particularly useful when you want to view the progress of some process from a log file. For example, if you want to see when the Apache server has finished loading, instead of … Read more
This article will show you how to create and delete symbolic links on a Linux system such as Ubuntu, Red Hat, and other Linux distributions. A symbolic link is a file that points to another file. Note that there is only 1 copy of the actual file on the hard disk, thus saving valuable hard … Read more
Understanding the amount of RAM (Random Access Memory) on your Linux system is crucial for optimizing performance and ensuring efficient resource management. Whether you’re a system administrator, a developer, or a casual user, knowing how to check your RAM details can help you make informed decisions about running applications, troubleshooting, and system upgrades. This guide … Read more
Understanding the performance capabilities of your Linux system is more vital than ever. Whether you’re a software developer testing an application, a sysadmin maintaining servers or an everyday user simply looking to optimize your system performance, knowing your CPU speed and model under Linux is a key piece of the puzzle. Today, we’ll delve into … Read more
We’ll show you how to archive and extract files in Linux using the tar command. The tar command, short for ‘tape archive,’ is a critical skill in mastering the Linux environment. This article offers an in-depth guide on how to use tar to archive and extract files in three major Linux distributions: Ubuntu, CentOS, and … Read more
In this guide, we’ll dive into various methods to determine the number of files within a Linux directory. Whether you’re dealing with a handful of files or managing complex directory structures, understanding how to accurately count files is crucial for effective file management. We’ll cover simple to advanced techniques, ensuring you can tackle any scenario … Read more
This article will explain how to change the file extension for all files in a directory in Linux using a simple bash shell command. While you are on a learning path, be sure to checkout other useful Linux articles such as Insert/Add String to Beginning of a File and Linux – How to find the number … Read more
Running a script automatically at startup in Linux is a useful technique, whether you’re a system administrator managing multiple servers or a regular user looking to automate routine tasks. Automating tasks like system maintenance, launching applications, or running background services when your system boots can save you time and effort. In this guide, I’ll walk … Read more
This article will show you a very simple way to find the size of a PostgreSQL database using a SQL SELECT statement. This will work on PostgreSQL version 8.3.3, but should work on older versions as well. Looking for optimize your database performance, check out How to find when PostgreSQL tables were auto-vacuumed and auto-analyzed … Read more
This article will explain how to mount an ISO image quickly and easily on Linux without downloading any additional software. If you are on a Windows operating system, check out the article: How to mount an ISO on Windows XP and Windows Vista. ISO image files are often used in the distribution of software or … Read more
This article will explain two different methods on mount an ISO/IMG image on Windows XP and Windows 7 as a virtual drive. The first option will work on all Windows flavors and for .iso, .bin, .cue, .uif, .nrg, and .img file extensions. The second option works on Windows XP only and supports only .iso files. … Read more
In this blog post, we’ll walk you through five command-line examples that can help you pinpoint the largest files in your Linux system. When it comes to Linux system administration, monitoring disk usage is a critical task. But how do we find the largest files eating up valuable disk space? It’s easier than you might … Read more