Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Operating System Articles
Page 130 of 171
How To Add User to Sudoers & Add User to Sudo Group on CentOS 7
If you're new to CentOS 7, one of the first things you'll want to do is learn how to add users to the sudoers file and the sudo group. This will give them elevated privileges and allow them to run commands with root-level permissions. In this article, we'll walk you through the process step-by-step. What is Sudo? Before we get started, let's talk about what sudo is and why it's important. Sudo stands for "superuser do" and is a command that allows users to perform tasks with administrative permissions. By default, only the root user has these permissions ...
Read MoreHow to Improve Linux System Security
Linux system security is crucial for protecting against various threats, from unauthorized access to malware infections. While Linux is inherently more secure than many operating systems, implementing proper security measures is essential for maintaining robust protection. This article explores practical methods to enhance your Linux system's security posture. Keep System Updated Regular system updates are the foundation of Linux security. Updates contain critical security patches that address newly discovered vulnerabilities. For Debian-based systems (Ubuntu, Debian) − sudo apt update sudo apt upgrade For RPM-based systems (Red Hat, CentOS, Fedora) − sudo ...
Read MoreHow to Increase Disk Inode Number in Linux
In Linux, an inode is a data structure that stores metadata about files and directories, including ownership, permissions, size, and disk location. Each file system has a fixed number of inodes created at format time. When inodes are exhausted, no new files can be created even if disk space remains available. This article explains how to increase the inode count in Linux. Understanding Inodes Inodes are allocated when the file system is created, not when files are created. Each inode contains a unique number that the file system uses to track files. The total inode count is determined ...
Read MoreHow to Increase SSH Connection Timeout in Linux
Secure Shell (SSH) is a widely used protocol for accessing remote systems securely over an insecure network. When establishing an SSH connection, there is a timeout value that determines how long the connection can remain idle before being closed. This mechanism prevents unauthorized access but can be inconvenient during extended work sessions. The SSH connection timeout is essential for security, but it can be a hassle when working on remote systems for extended periods. This article discusses how to increase the SSH connection timeout in Linux through various configuration methods. Understanding SSH Connection Timeout The SSH connection ...
Read MoreHow to Install and Configure Memcached on CentOS 8
Memcached is a distributed memory object caching system that can significantly improve the performance of your website or application by storing frequently accessed data in memory, reducing the number of database queries required. In this article, we will guide you through the process of installing and configuring Memcached on CentOS 8. Step 1: Install Memcached on CentOS 8 The first step is to install Memcached on your CentOS 8 system. You can do this by running the following command − sudo dnf install memcached This command will download and install Memcached on your system. ...
Read MoreHow to Install “atop” to Monitor Logging Activity of Linux System Processes
As a Linux user, monitoring your system's performance and process activity is crucial for maintaining optimal system health. With numerous processes running simultaneously on your Linux system, tracking resource usage and identifying performance bottlenecks can be challenging. Fortunately, there's a powerful tool called atop that provides comprehensive system and process monitoring capabilities. In this article, we'll guide you through installing and using atop to monitor your Linux system effectively. What is Atop? Atop is a Linux performance monitoring tool that displays real-time system and process-level performance statistics. It provides a comprehensive overview of system performance, including CPU usage, ...
Read MoreHow to Install “IPFire” Free Firewall Linux Distribution
If you're looking for a reliable and robust firewall solution for your network, IPFire might be the answer. IPFire is a free and open-source Linux distribution that provides enterprise-level security features, including a stateful inspection firewall, intrusion detection and prevention, virtual private networking (VPN), and more. In this article, we will guide you through the steps to install IPFire on your network. System Requirements Before we get started, let's make sure that your system meets the minimum requirements for IPFire − A 64-bit processor At least 512 MB of RAM (1 GB recommended) At least 4 ...
Read MoreHow to Install & Setup a Mumble Server {Murmur} on Linux CentOS 7
Mumble is an open-source, low-latency, high-quality voice chat software primarily designed for online gaming communities. It provides a secure, reliable, and scalable communication system for users. Mumble has two components: the client software that users install on their machines, and the server software (called Murmur) that runs on a dedicated server. This tutorial covers how to install and configure a Mumble server on Linux CentOS 7. Prerequisites Before starting the installation process, ensure the following requirements are met: A Linux CentOS 7 server with root access An SSH client such as PuTTY or Terminal A non-root ...
Read MoreHow to Install a Debian 10 (Buster) Minimal Server
Debian 10 (Buster) is a reliable and secure server operating system known for its stability, security, and open-source nature. A minimal server installation provides a stripped-down version without graphical interface or unnecessary software, making it ideal for custom server configurations tailored to specific needs. Before proceeding, note that installing a Debian 10 minimal server requires basic Linux command-line knowledge. If you're new to Linux, consider starting with a desktop version like Debian 10 GNOME before moving to the minimal installation. Prerequisites Basic understanding of Linux command line USB drive with at least 4GB capacity Target server ...
Read MoreHow to Install a Desktop (GUI) on an Ubuntu Server
Ubuntu is a popular Linux distribution that is widely used for its reliability and security. One of the main advantages of using Ubuntu is that it is available in two versions: desktop and server. The desktop version comes with a graphical user interface (GUI), which makes it easy to use for beginners. On the other hand, the server version does not have a GUI, as it is designed for advanced users who prefer to work from the command line. However, in some cases, you may want to install a GUI on an Ubuntu server to make it easier to manage. ...
Read More