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Found 1383 Articles for Open Source
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Introduction As a Linux system administrator, one of your most important tasks is to ensure the security of your system. One way to do this is by monitoring failed SSH login attempts. Every time a user attempts to log in via SSH, whether successful or not, it is recorded in the system logs. By analyzing these logs, you can identify any unauthorized access attempts and take action to prevent them. Failed login attempts can be an indicator of several security issues such as brute-force attacks by hackers attempting to guess passwords or compromised user accounts. Monitoring failed SSH login ... Read More
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Introduction If you are a software user or developer, you have likely encountered a software bug at some point. A software bug is an error or flaw in a computer program that causes it to produce unintended or incorrect results. These bugs can range from minor nuisances to major issues that cause programs to crash, and they can occur in any software application regardless of its complexity. Fedora is a popular open-source operating system that is used by millions of people around the world. It is known for its stability, security, and cutting-edge features, making it a favorite among ... Read More
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Introduction Tar.gz files, also known as "tarballs, " are a type of file format that is commonly used in Linux and other Unix-based operating systems. A tarball is essentially a compressed archive that contains one or more files or directories. These files are typically compressed using the gzip compression algorithm, resulting in a smaller file size than their uncompressed counterparts. The purpose of using tarballs is to make it easier to transfer large amounts of data between different systems and to store backups of important data. In addition, they allow you to compress multiple files into a single archive, ... Read More
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Introduction The Logical Volume Manager (LVM) is a powerful tool that allows system administrators to allocate storage space dynamically, without the need for reformatting or repartitioning the disks. The LVM is an essential component of modern Linux systems. It provides a flexible, scalable, and highly available storage infrastructure that can be easily managed and extended as needed. The LVM consists of several layers: physical volumes, volume groups, and logical volumes. Physical volumes are disks or disk partitions that are used to create volume groups. Volume groups are logical collections of physical volumes that can be used to create ... Read More
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Introduction PostgreSQL is a powerful open-source relational database management system that is widely used for developing and managing complex web applications. It provides various features, including concurrency without read locks, indexing, data integrity, and fault tolerance. One of the most important features of PostgreSQL is its ability to interact with different file formats, including CSV (comma-separated value), which makes it easy to export data from the database. CSV is a simple file format commonly used for exchanging data between different applications. A CSV file contains one or more rows of data where each row represents a record or entry. ... Read More
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Introduction Linux is an open-source operating system that has become increasingly popular over the years. It was developed by Linus Torvalds in 1991 and has since then revolutionized the world of operating systems. Unlike other proprietary operating systems, Linux is free to use, modify and distribute. Due to its numerous benefits, including flexibility, security and stability, it has become a preferred choice for many developers and users alike. Understanding the basics of Linux Explanation of Linux operating system Linux is a free and open-source operating system that was first developed by Linus Torvalds in 1991. It is a ... Read More
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Introduction Vim and Vi are two of the most widely used text editors in the Linux operating system. They are powerful, versatile, and provide numerous features that make them ideal for programming, editing configuration files, or performing any other text-based task. However, these editors can be somewhat intimidating for beginners due to their unique interface, commands, and modes. One of the most important things you need to learn when using either of these editors is how to exit them properly. When you're working with a document or file in Vim or Vi, it's easy to get engrossed in writing ... Read More
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Introduction Data security has become a major concern in today's world where most of our personal and professional information is stored digitally. Keeping critical data safe from unauthorized access is crucial to protecting your privacy and preventing identity theft. Encryption plays an important role in ensuring the safety of sensitive information stored on your computer. When someone gains access to your computer, they have unfettered access to everything on it, including personal documents, financial records, email contacts, and sensitive business information. Encryption helps protect this data by encrypting the entire hard disk drive or solid-state drive (SSD) so that ... Read More
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Introduction Linux Unified Key Setup (LUKS) is a disk encryption specification that provides an easy-to-use interface for encrypting hard drives. It is a widely used encryption standard in the Linux community, its importance lies in the fact that it ensures data stored on your hard drive remains safe from unauthorized access in the event of theft or loss. When you encrypt a drive with LUKS, all your files, documents, and media become unreadable without a password key. Without this password key, it's virtually impossible to access the contents of an encrypted drive. Considering the amount of sensitive information we ... Read More
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Introduction In the world of technology, security is a top priority for all users. One of the most important aspects of security is a firewall, which helps to protect your computer from unauthorized access and potential attacks. Ubuntu 18.04 and 20.04 come with a built-in firewall tool called UFW (Uncomplicated Firewall), which is designed to be easy to use, even for beginners. UFW Firewall is an essential component of the Linux operating system and can be used to configure network traffic rules on your Ubuntu server or desktop. It can help you to secure your system by blocking incoming ... Read More
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