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Ubuntu apt-get update problems”Something wicked happened resolving ‘extras.ubuntu.com:http [-5 – No address associated with hostname...

      This error “[-5 – No address associated with hostname]” is very common while installing or updating packages in Ubnutu Linux which is due DNS. To solve this issue change the “Download from” option in Update Manger. Select the option which has IP address its name. Follow the below steps to correct the… Read More »

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Elasticsearch Java API – Get Alias List

The following is sample Java program to get the list of aliases in an Elasticsearch instance. Sample Program: package com.report.test; import java.util.ArrayList; import java.util.List; import org.elasticsearch.client.Client; import org.elasticsearch.client.transport.TransportClient; import org.elasticsearch.cluster.metadata.AliasMetaData; import org.elasticsearch.common.collect.ImmutableOpenMap; import org.elasticsearch.common.settings.ImmutableSettings; import org.elasticsearch.common.settings.Settings; import org.elasticsearch.common.transport.InetSocketTransportAddress; public class SampleProgram{ public static void main(String[] args) { String hostname = "localhost"; String clusterName = "elasticsearch"; Settings… Read More »

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SpaceTop – An Interactive 2D & 3D Computer

            SpaceTop is a technology and design to make 2D and 3D spacial interaction in a desktop computer. While a traditional desktop uses a keyboard and a mouse for interaction, SpaceTop uses a completely redefined display setup and visualization for seamless 2D and 3D interaction on the objects on the… Read More »

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Create Custom Filter/Plugin to Emit New Events Manually in Logstash

     This article details about on how to create new events using custom filters in Logstash. There is already a SPLIT filter available in Logstash which can be used to split a single event into multiple events based on a delimiter. But that will not suit us in all the cases. So below is… Read More »

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How to install Ruby on Rails (ROR) in Ubuntu Linux

      There are a lot of posts out there to install Ruby on Rails in Linux and Windows which are not clear explained. The reason is that latest version of Ruby and Gem are causing some issues due to which we are not able to use Rails. So I have given simple steps… Read More »

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