KedryDev

Introduction Security is paramount when using Ubuntu (Linux), ensuring protection against various threats and vulnerabilities. This guide covers essential practices to enhance the security of your Ubuntu system. Step 1: Regular System Updates Keeping your Ubuntu system up to date is crucial for security: Using Command Line: Update package lists: sudo apt update Upgrade installed packages: sudo apt upgrade Step 2: Configuring Firewall Settings Enable and configure the firewall to control incoming and outgoing traffic: Using UFW (Uncomplicated Firewall): Install UFW if not already installed: sudo apt install ufw Enable the firewall: sudo ufw enable Allow necessary services: sudo ufw allow ssh Step 3: Secure SSH Access Secure SSH configuration to prevent unauthorized access: Edit SSH Configuration: Edit SSH configuration file: sudo nano /etc/ssh/sshd_config Disable root login: PermitRootLogin no Use SSH keys for authentication: PasswordAuthentication no ...

Introduction Managing software packages is crucial for maintaining a stable and secure Ubuntu (Linux) system. In this guide, you will learn essential commands and techniques to effectively manage software packages using the command line. Step 1: Updating Package Lists Before installing or upgrading packages, it's essential to update your local package lists to fetch the latest information from repositories. sudo apt update Step 2: Installing Packages To install a package, use the apt install command followed by the package name. For example, to install VLC media player: sudo apt install vlc Step 3: Removing Packages To remove a package from your system: sudo apt remove package_name To remove a package along with its configuration files: sudo apt purge package_name Step 4: Upgrading Packages To upgrade all installed packages to their latest versions: sudo apt upgrade To also remove obsolete packages during the upgrade: sudo apt full-upgrade Step 5: Searchin...

Introduction Monitoring system performance in Ubuntu is crucial for maintaining optimal operation and identifying resource bottlenecks. In this guide, you'll learn how to use system monitoring tools to analyze and optimize your Ubuntu system. Step 1: Installing System Monitoring Tools First, let's install the necessary system monitoring tools to help us optimize Ubuntu: Using System Monitor: Install GNOME System Monitor with: sudo apt install gnome-system-monitor Using htop: Install htop for more detailed system monitoring: sudo apt install htop Step 2: Monitoring System Resources Now, let's explore how to monitor system resources effectively: Using System Monitor: Launch GNOME System Monitor from the Applications menu. Monitor CPU, memory, disk usage, and network activity in real-time. Using htop: Open a terminal and run htop to view detailed process information: htop Step 3: Analyzing Resource Usage Next, let's analyze how resources are bei...