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Articles by Satish Kumar
Page 56 of 94
Configure sendmail with Gmail on Ubuntu
Sendmail is a popular mail transfer agent used to send emails from one computer to another. It is often installed by default on Ubuntu, making it a convenient option for sending emails from a server. If you use Gmail, you can configure sendmail to send emails through your Gmail account. In this article, we will show you the process of configuring sendmail with Gmail on Ubuntu. Requirements Before starting, there are a few requirements needed to configure sendmail with Gmail on Ubuntu − A Gmail account An Ubuntu server Sendmail installed on your Ubuntu server ...
Read MoreHow to Calculate Optimal Blocksize to Use With dd in Linux
The optimal block size to use with the dd command in Linux depends on the specific use case and the hardware you are working with. However, as a general rule of thumb, it is best to use a block size that is a multiple of the disk's physical block size, as this can lead to better performance. Determining Physical Block Size To determine the physical block size of a disk, you can use several methods. The fdisk command with the -l option will list all partitions on the disk, along with the start and end cylinders, and the ...
Read MoreAutomatic Performance Tuning of CentOS/RHEL Servers
Automatic performance tuning for CentOS/RHEL servers involves using intelligent tools and daemons that continuously monitor system resources and adjust configuration parameters dynamically. This approach eliminates manual intervention while ensuring optimal performance across CPU, memory, disk I/O, and network subsystems based on workload patterns. What is Performance Tuning? Performance tuning is the process of optimizing a system's performance by adjusting various parameters and settings. In the context of server performance tuning, it involves tweaking settings such as CPU utilization, memory usage, disk I/O, network throughput, and application-specific configurations to achieve maximum efficiency. Why Automatic Performance Tuning? Manual ...
Read MoreHow to Install a DHCP Server in CentOS, RHEL and Fedora
DHCP (Dynamic Host Configuration Protocol) is a network protocol that automatically assigns IP addresses and network configuration parameters to devices on a network. It eliminates manual IP configuration, reducing administrative overhead and preventing address conflicts. This article guides you through installing and configuring a DHCP server on CentOS, RHEL, and Fedora systems. Install DHCP Server Package First, install the DHCP server package using the package manager. For newer versions, use dnf, while older versions use yum − # For CentOS 8+/RHEL 8+/Fedora sudo dnf install dhcp-server # For CentOS 7/RHEL 7 sudo yum install dhcp ...
Read MoreHow to setup sendmail in ubuntu?
Sendmail is a powerful and reliable mail transfer agent (MTA) that efficiently handles large volumes of email on Linux systems. It works by accepting email messages from local or remote mail clients and relaying them to destination mail servers using the Simple Mail Transfer Protocol (SMTP). This article provides a comprehensive guide on installing and configuring Sendmail on Ubuntu systems, covering everything from basic setup to advanced configuration options. Installing Sendmail on Ubuntu Begin by updating your package list and installing Sendmail using the following commands: sudo apt-get update sudo apt-get install sendmail ...
Read MoreShowing a GUI Notification From a Shell Script in Linux
GUI notifications from shell scripts in Linux allow you to display visual alerts and messages to users. Two primary tools accomplish this: notify-send for desktop notifications and zenity for interactive dialog boxes. Using the notify-send Command The notify-send command is part of the libnotify library and comes pre-installed on most Linux distributions. It displays brief desktop notifications that appear in the system notification area. Basic Syntax notify-send [options] Simple example displaying a notification − notify-send "Hello" "World" Common Options Option Description Example Values ...
Read More8 Open Source Commercial Billing Platforms for Hosting Providers
As demand for web hosting services grows, hosting providers are continually looking for ways to automate their billing processes. Commercial billing platforms offer a comprehensive solution, but not every provider has the budget for expensive proprietary software. Fortunately, open source billing platforms provide a cost-effective alternative to automate billing, client management, and payment processing. In this article, we will explore eight open source commercial billing platforms specifically designed for hosting providers. Top Open Source Billing Platforms WHMCS WHMCS is one of the most popular billing platforms for hosting providers. It offers complete client management and billing software with ...
Read MoreHow to Install and Configure OpenVPN Access Server?
Virtual Private Network (VPN) technology is essential for secure remote access to networks and resources. OpenVPN Access Server is a popular VPN solution that provides a scalable and robust VPN infrastructure for enterprises and organizations of all sizes. In this tutorial, we will walk through the complete process of installing and configuring OpenVPN Access Server on Ubuntu 20.04. Prerequisites Before we start, ensure you have the following prerequisites − A VPS or dedicated server with Ubuntu 20.04 installed Root access to the server A domain name pointing to your server IP address A static IP address ...
Read MoreConfigure Postfix to Use Gmail SMTP on Ubuntu
Postfix is an open-source mail transfer agent (MTA) that allows users to send and receive email on Linux systems. It is an efficient and easy-to-use solution that can be configured to work with various email providers, including Gmail. In this article, we will show you the steps to configure Postfix using Gmail SMTP on Ubuntu. This process involves setting up your Gmail account to allow apps to access it, installing and configuring Postfix, and testing the setup to ensure it works correctly. Why Use Gmail SMTP with Postfix? Using Gmail SMTP with Postfix offers several benefits: ...
Read MoreRun a Java Application as a Service on Linux
Running a Java application as a service on Linux allows your application to start automatically at boot time, run in the background, and be managed using standard system commands. This approach ensures your Java applications remain running even after terminal sessions are closed and can be controlled through the system service manager. Understanding Linux Services A service (or daemon) in Linux is a background process that performs specific functions without direct user interaction. Services can be started automatically at boot time and controlled using command-line tools or system service managers like systemd or Upstart. To create a ...
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