Found 520 Articles for Open Source

Setting Permissions with chown and chmod

Satish Kumar
Updated on 03-Mar-2023 14:38:17
When working with files and directories in Linux, it’s important to understand how to set permissions. Permissions define who can access and modify files and directories on a system. In this article, we will go through how to use chown and chmod commands to set permissions on files and directories. Understanding Linux File Permissions In Linux, each file and directory has three types of permissions: read, write, and execute. These permissions can be set for three different categories of users − owner of file or directory, group to which file or directory belongs, and all other users. The read permission ... Read More

Guide to the Linux find Command

Satish Kumar
Updated on 03-Mar-2023 14:37:22
Introduction Linux is powerful operating system it provides a variety of command-line tools to managing files or directories. One of most useful tool is find command, it allows users to search any files and directories based on a wide range of search criteria. In this article, you will get a comprehensive guide to using find command, including a variety of examples that demonstrate its capabilities. Basic Usage The basic syntax of find command is as follows − find [path] [expression] The path argument specifies starting directory for search, and expression argument specifies criteria for search. Here are ... Read More

Configure Postfix to Use Gmail SMTP on Ubuntu

Satish Kumar
Updated on 03-Mar-2023 14:35:14
Introduction Postfix is open-source mail transfer agent (MTA) it allows users to send and receive email on Linux system. It is efficient and easy-to-use solution, it can configured to work with various email providers, including Gmail. In this article, we will show you steps to configure Postfix using Gmail SMTP on Ubuntu. This process involve setting up Gmail account to allow any apps to access it, installing and configuring Postfix, testing setup to ensure it works. Before dive into details, let's take why you might want to use Gmail SMTP with Postfix. Why Use Gmail SMTP with Postfix? Using ... Read More

How to setup sendmail in ubuntu

Satish Kumar
Updated on 03-Mar-2023 14:33:41
When it comes to sending email using Linux system, there are a few options to choose from. However, Sendmail is popular choices, and for good reason. Sendmail is efficient and reliable mail transfer agent (MTA) that handle large volume of emails. In this article, we will show you step-by-step how to set up Sendmail on your Ubuntu system. Before we start installation process, let's talk to understand how Sendmail works. Sendmail works by accepting email messages from local or remote mail clients, then relaying them to destination mail servers. This messages can delivered to other machines on the local network ... Read More

Configure sendmail with Gmail on Ubuntu

Satish Kumar
Updated on 03-Mar-2023 14:32:19
Sendmail is a popular mail transfer agent used to send emails from one computer to another. It may installed by default on Ubuntu, which makes it a convenient option to sending emails from server. If you use Gmail, you can configure sendmail to send emails through Gmail account. In this article, we will show you the process of configuring sendmail with Gmail on Ubuntu. Requirements Before starting, there are few requirements that need to configure sendmail with Gmail on Ubuntu − A Gmail account A Ubuntu server Sendmail installed on your Ubuntu server OpenSSL installed on your Ubuntu server ... Read More

Configure Postfix with Gmail on Ubuntu

Satish Kumar
Updated on 03-Mar-2023 11:03:02
Introduction Postfix is used mail transfer agent that is used to send and receive emails. It is easy to install and configure on Ubuntu server. In this tutorial, we will show you how to configure Postfix with Gmail on Ubuntu. Prerequisites Before you proceed, you will need the following − A running Ubuntu server A Gmail account A valid domain name that is configured to point to the server's IP address Step 1: Install Postfix In the first step install Postfix on your Ubuntu system. You can do this by running following command − sudo apt-get install postfix ... Read More

How to setup firewall in Linux?

sudhir sharma
Updated on 27-Feb-2023 12:50:42
Firewalls are an integral component of every contemporary computer system, safeguarding the network and protecting the system from illegal access. We'll take a deep dive into the realm of Linux firewalls and learn how to configure one in this post. Before we involve into the technical details of establishing a firewall in Linux, let us clarify what a firewall is and why it is so important! A firewall is a network security device that monitors and restricts network traffic based on predefined security rules. A firewall's principal function is to block unauthorised access to a computer system or network while ... Read More

Understanding Docker Architecture with examples

Aadyaa Srivastava
Updated on 27-Feb-2023 09:43:35
Describe Docker Docker is an open-source container management platform that is free to use and offers a wide range of tools and utilities for developing, testing, and deploying applications. You can build packed, isolated, and platform-independent containers that include all libraries and dependencies. This will make it simple for you to create and distribute applications. The Docker Platform The Docker platform provides tools and utilities for packaging, building, and running software applications in isolated and containerized environments known as containers. The Docker architecture's security and isolation enable you to do so. Docker includes numerous tools for managing container lifecycles. ... Read More

Difference between OVID and PubMed

Md. Sajid
Updated on 17-Feb-2023 17:19:36
These two are mostly used bibliographic databases. There are a few key differences between OVID and PubMed. For one, OVID offers a much more intuitive interface than PubMed. This is because OVID is designed specifically for clinical researchers, while PubMed is designed for general biomedical researchers. Another key difference is that OVID offers better search filters than PubMed. This is because OVID includes filters for things like publication type, date range, and subject area. This means that you can really narrow down your search results to find exactly what you're looking for. Finally, OVID also offers a "My Bibliography" feature, ... Read More

How to save all Docker images and copy to another machine?

Hemant Sharma
Updated on 17-Feb-2023 14:55:11
Introduction Docker images are the building blocks of containerized applications. They are lightweight, portable and can be easily shared between different machines. In this article, we'll take a look at how to save all Docker images on one machine and transfer them to another machine. Method 1: Using docker save and docker load One way to save and transfer Docker images is by using the docker save and docker load commands. The docker save command allows you to save one or more images to a tar archive, which can then be transferred to another machine. The docker load command allows ... Read More
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