Author: Rahul

Go is an open-source programming language developed by a team at Google. It provides easy to build simple, reliable, and efficient software. This language is designed for writing servers, that’s why it is using widely these days. Go has released the latest version 1.23. This tutorial will help you to install Go 1.23 on your Ubuntu 24.10, 24.04 LTS and previous Ubuntu systems. Step 1: Install Go on Ubuntu Login to your Ubuntu system using ssh and upgrade to apply latest security updates there. sudo apt update sudo apt-get -y upgrade Now download the Go language binary archive file using…

This article will help you to install Python 3.5.9 on Ubuntu, Debian, and Linuxmint operating system. To know more about this version visit Python official website. Step 1 – Prerequisites You must have fulfilled all the prerequisites for installing Python on Ubuntu, Debian and Linuxmint. Use the following command to install all the prerequisites. After that go for the Python installation on Ubuntu. sudo apt-get install build-essential checkinstall sudo apt-get install libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev Step 2 – Download Python 3.5 Download Python source code archive from its official download website. You can also download Python…

Apache Solr is a powerful, open-source search platform built on Apache Lucene. It is designed for fast and efficient searching, indexing, and analytics, making it ideal for enterprise applications, websites, and data-driven projects. This guide will walk you through the steps to install Apache Solr 9.8.1 on Ubuntu 24.04 LTS in a simple and detailed way. Prerequisites Before you begin, make sure you have the following: A computer or server running Ubuntu 24.04 LTS Root access or a user with sudo privileges Basic familiarity with Linux terminal commands An active internet connection to download packages Step 1: Update Your System…

Hadoop Distributed File System (HDFS) is a key component of the Hadoop ecosystem, designed to store vast amounts of data across multiple nodes, providing high availability and fault tolerance. Understanding and mastering Hadoop involves getting hands-on with HDFS commands to manage and manipulate the filesystem. In this article, we’ll take a deep dive into some of the most essential HDFS commands, exploring what they do, and how to use them effectively. Understanding Hadoop Distributed File System (HDFS) HDFS is a distributed file system that is designed to handle large datasets by distributing them across numerous nodes in a cluster. It…

The Hadoop Distributed File System (HDFS) is a core component of the Apache Hadoop project. It provides a distributed storage solution that is designed to handle large data sets across clusters of commodity servers. However, like any sophisticated software, it comes with its own set of challenges, one of which is the error message ‘Hadoop/HDFS ls: ‘.’ : No such File or Directory’. In this article, we will dissect this error, explore its potential causes, and provide actionable solutions. Understanding the Error Before delving into the causes and solutions, let’s understand the error in question. The ls command is a…

Let’s Encrypt is a certificate authority (CA) providing free SSL/TLS certificates. You can get a valid SSL certificate for your domain at no cost. These certificates can be used for production use as well. The certificates can only be requested from there server where the domain is pointed. Let’s Encrypt do a DNS check for the domain, that domain is pointed to the current server. After that it issue certificate for you. This tutorial will help you to install Let’s encrypt client on your Ubuntu system and issue SSL certificate for the domain. Secure Apache with Let’s Encrypt SSL Secure…

In Gentoo Linux, one of the most powerful and flexible distributions, there is an important tool called the init system. This is the first process that runs when you boot your system, and it controls the startup of other processes. In Gentoo Linux, as with other UNIX-like systems, the init system used is OpenRC. It uses scripts called init scripts to manage the services. However, there are times when you need to add your own startup and shutdown scripts to perform specific tasks. This could be anything from starting a particular application, loading modules, or even performing cleanup tasks before…

Namenode loads the filesystem state from fsimage and stays in safe mode and wait for data nodes to report their blocks. Safemode is a read-only mode for HDFS cluster, so that it does not prematurely start replicating the blocks. Use following command to let the namenode leave safemode forcefully. $ hadoop dfsadmin -safemode leave In newer versions of hadoop command is deprecated. You can use hdfs command instead of hadoop. For example: $ hdfs dfsadmin -safemode leave You must run hadoop fsck so sort out any inconsistencies created in the hdfs due to above command.

Using SQL Query Window: Use WITH REPLACE option with the RESTORE command on MSSQL query window. Change database name and backup file location as per your setup. USE MASTER GO RESTORE DATABASE MyDB FROM DISK = ‘C:\Backups\MyDB_15082016.bak’ WITH REPLACE GO

Golang, also known as Go, has emerged as a popular programming language for modern software development due to its simplicity and efficiency. This tutorial provides a comprehensive guide on installing Golang on CentOS/RHEL versions 9 and 8, two widely used Linux distributions renowned for their stability and robustness in enterprise environments. Prerequisites Before beginning the installation, ensure you have: A CentOS/RHEL 9 or 8 system. Root or sudo access to the system. Basic knowledge of Linux terminal commands. Step 1: Update Your System Start by updating your system packages to the latest versions. This ensures compatibility and security. Open a…