Install Hyperledger Fabric on Ubuntu 18.04.1 – Step by Step

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Installation of Hyperledger Fabric on Ubuntu is very straight forward and is a step-by-step process. We can majorly divide this whole process into two major parts: First we need to install all pre-requisites and then we proceed towards installation of Fabric itself.

Installing Prerequisites for Hyperledger Fabric:

  • CURL
  • GO Programming Language with setup of path variable
  • Docker & Docker Compose
  • Node.js Runtime & NPM
To install all these prerequisites run following commands in terminal window one by one, everything should go smooth.

sudo apt-get install curl
sudo apt-get install golang-go
export GOPATH=$HOME/go
export PATH=$PATH:$GOPATH/bin
sudo apt-get install nodejs
sudo apt-get install npm
sudo apt-get install python
sudo apt-get install docker
curl -fsSL | sudo apt-key add -
sudo add-apt-repository "deb [arch=amd64] $(lsb_release -cs) stable"
sudo apt-get update
apt-cache policy docker-ce
sudo apt-get install -y docker-ce
sudo apt-get install docker-compose
sudo apt-get upgrade

Till now the environment is ready to install Hyperledger Fabric, Now we will download fabric samples. To do that run following commands in terminal one by one…

sudo curl -sSL | sudo bash -s 1.1.0
sudo chmod 777 -R fabric-samples

Now go into first-network directory which is inside fabric-samples folder and then we will run generate script that will create certificates and keys for the entities on our first blockchain network. This will also create genesis block (first block on blockchain)

cd fabric-samples/first-network
sudo ./ generate

Bring your first network up by running following command. byfn stands for “Build Your First Network”

sudo ./ up

If everything works fine you should see start screen of fabric network. To bring network down following command is used.
sudo ./ down

Installing SQL Server Management Studio

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Installing SQL Server Management Studio and connecting with Database

Installing SQL Server 2017

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Learn to Install SQL Server 2017 in your local computer

Return String as ActionResult in ASP.Net MVC

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You can simply just use the ContentResult to return a plain text string:

public ActionResult Temp() {
return Content("Hi there!");

Check if jQuery UI is loaded ?

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Question: How to check if jQuery UI is loaded on web page ?

First make sure you put any code that calls it in $(document).ready(). At that point, everything should be loaded on the page.

One better way is to check by writing Read the rest of this entry »

Blockchain in Health Insurance Industry

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Blockchain is reshaping DNAs of almost all businesses, Health Insurance industry is one of them. No doubt insurance industry is already very mature enough but still stakeholders face day to day issues due to lack of connectivity between computerized systems of Insurance Vendors, Hospitals and other Healthcare Services Providers. Read the rest of this entry »

Drop system-versioned temporal table in SQL Server

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To Drop a Temporal Table you first need to turn System_Versioning OFF. Then Delete your required temporal table. Finally you can also choose to delete History table associated with your Temporal Table.

DROP TABLE [dbo].[TemporalTest]
DROP TABLE [dbo].[TemporalTestHistory]