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Blockchain Smart Contract Theory Behind

The smart contract in Blockchain is a kind of software application that works without human intervention based on the transaction logs and provide a solution to the user request. 
I want to share the back end mechanism in the Smart Contract of Blockchain.

Smart Contract Mechanism What is Smart ContractA smart contract is a protocol which can auto-execute, facilitate, verify, or enforce the negotiation of a contract.Agreement between two parties you can say as a contract.Incorporating the rules of the physical contract into the computing world, you can say as a smart contractBlockchain supports you to create smart contracts.Smart Contracts are self-executing programs which run on the blockchain and are capable of enforcing rulesUsing Blockchain as a platform and making an agreement or contract between more than two parties, you can say as Smart Contract.Traditional Markets  4 Top Benefits of Smart ContractCurrently, smart contracts are being used only in Crypto CurrenciesNow Smart Contra…
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Unix Vi Editor Commands to Save, Quit

In Vi editor Save, Quit without saving and Save and quit are tricky commands. I have given these commands for your reference.


w - To Save Your Work
q - To Quit
wq - To Save and Quit

vi editor also called Visual editor in terms of Unix or Linux or Ubuntu Operating systems. Since all are the same UNIX flavor, and UNIX is the mother of all these operating systems.

Recently many of my friends asked to share some daily use vi editor commands. I am sharing those for your quick reference.

Vi Editor Top Commands for Your Projects and Interviews


1. How to Edit a file?

vi filename

This is the first command to use for editing a file.

2. A command to Repeat Previous Command?

Use the UP arrow to repeat the previous command.

3. How to Insert data?

Use insert command to over-type data.

4. How to Save File?

Press Esc
:w

5. How to Save and Quit (Exit)?

Press Esc
:wq

6 How to quit without Save?

Press Esc
:q

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