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Operating System Articles
Page 134 of 171
Memory Management: Background
Memory management is a fundamental aspect of operating systems that controls how memory resources are allocated, tracked, and released. It ensures that programs have access to the memory they need while maintaining system stability and performance. The operating system acts as a mediator between applications and the physical memory, managing both primary memory (RAM) and secondary storage to optimize overall system efficiency. How Memory Management Works The operating system divides memory into different regions and assigns these areas to applications and processes as needed. It maintains data structures to track which memory locations are free, which are allocated, ...
Read MoreWorking with the AWS CLI for EC2
The AWS CLI (Amazon Web Services Command Line Interface) is a powerful tool that enables users to manage AWS services, including EC2 (Elastic Compute Cloud) instances, directly from the command line. This unified tool provides an efficient way to automate cloud infrastructure management tasks and streamline operations without using the AWS Management Console. The AWS CLI allows users to automate complex tasks, manage EC2 instances programmatically, and integrate AWS operations into scripts and workflows. This makes it an essential tool for DevOps professionals and system administrators working with AWS infrastructure. Setting Up AWS CLI Before using the ...
Read MoreHow to Find Duplicate Files in Unix?
As we increasingly depend on digital media for storing our important files, we tend to accumulate a large number of files over time. It can be challenging to manage these files, particularly when we have multiple copies of the same file that can consume storage space. Unix provides several powerful command-line methods to find and remove duplicate files, saving both time and disk space. In this article, we will explore various approaches to find duplicate files in Unix and demonstrate the terminal commands that can be used for each method. These approaches allow you to choose the method that ...
Read MoreWorking with Hidden Files in Linux
Hidden files in Linux are files that are not displayed when the standard ls command is executed. A hidden file's name begins with a dot (period). Not only files, but also directories can be hidden in Linux. Files are hidden for various purposes — primarily to prevent accidental modification or deletion of important system configuration files. Hidden files typically contain environment settings or application data that should only be accessed by specific programs, not manually edited by users. In this article, we will explore different methods for finding, creating, and manipulating hidden files in Linux using command-line tools. ...
Read MoreHow to Execute Programs From Anywhere in Linux?
Linux is a widely used open-source operating system that offers users the flexibility to execute programs from any location on the system. Unlike other operating systems, Linux does not restrict programs to fixed directories, enabling users to access executables from anywhere. This feature is particularly advantageous when you need a program to run from multiple locations or when managing custom software installations. To execute programs from anywhere in Linux, the system uses the PATH environment variable, which contains a list of directories where Linux searches for executable files. Understanding how this works and where programs are typically stored is ...
Read MoreHow to Mount and Unmount Filesystems in Linux?
In Linux, everything (pictures, binary files, text files, directories, etc.) is treated as a file. Understanding how to organize and access files efficiently is crucial for system administration. The mount and umount commands are essential tools for this purpose. In this article, we will explore these two commands in detail. The mount command allows us to attach a filesystem to a directory in the filesystem hierarchy, while the umount command detaches it. These operations can be performed on hard disks, USB drives, and other storage devices. Important: All mount and unmount operations require sudo or root privileges. Listing ...
Read MoreA Guide to Yum and Apt on Linux
Package management is a fundamental aspect of Linux system administration, enabling users to install, update, and remove software efficiently. Two of the most widely used package managers are Yum (used on Red Hat-based distributions like CentOS and Fedora) and Apt (used on Debian-based distributions like Ubuntu). These tools provide command-line interfaces for managing software packages and their dependencies automatically. This guide explores the essential commands and features of both Yum and Apt package managers, helping you understand how to effectively manage software packages on different Linux distributions. Managing Packages with Yum Yum (Yellowdog Updater, Modified) is the ...
Read MoreHow to Install Ajenti Control Panel in Debian and Ubuntu
Ajenti is an open-source web-based control panel that allows users to manage their servers and applications through a graphical user interface. It is written in Python and is compatible with multiple operating systems, including Debian and Ubuntu. In this tutorial, we will guide you through the steps required to install Ajenti Control Panel in Debian and Ubuntu. Prerequisites Before starting the installation, ensure you have − A Debian or Ubuntu server with root access An active internet connection At least 512MB RAM and 1GB disk space Step 1: Update System Before proceeding ...
Read MoreHow To Install an FTP Server on CentOS 7 With VSFTPD?
If you're looking for a reliable and efficient way to share files between computers on a network, FTP (File Transfer Protocol) is a popular option. In this article, we'll walk you through the steps to install an FTP server on CentOS 7 using VSFTPD (Very Secure FTP Daemon), a lightweight and secure FTP server for Unix-like systems. Step 1: Update System Before installing any new packages, it's always a good idea to update your system to ensure that you have the latest security patches and software updates. To do this, run the following command − sudo ...
Read MoreHow to Install Akaunting Accounting Software on Ubuntu 20.04?
Akaunting is a free, open-source accounting software that can be used to manage your finances, create invoices, track expenses, and generate financial reports. It is a great alternative to expensive commercial accounting software and is suitable for small to medium-sized businesses. In this article, we will guide you through the steps to install Akaunting on Ubuntu 20.04. Prerequisites Before starting the installation, ensure you have: Ubuntu 20.04 server with root or sudo access At least 1GB RAM and 10GB free disk space A domain name (optional but recommended for production) Step 1: Update Your ...
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