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How to Use Special Keys in UNIX

UNIX operating system has some special keys. These you can use to interrupt the program processing or to resume it. The file management and keys totally different in UNIX kinds of operating systems. 

An example of a UNIX special key and its use.
Why You Need Interruption
A scenario where you made some mistake in the input command and you need to stop the further process. Then you can use the CTRL+C command. It is equal to the DELETE command.

List of UNIX Special Keys

RETURN key — The RETURN key signifies the end of a line of input. On any terminal, RETURN has a key of its own, or return may be typed by holding down the control key and typing a 'm'.Ctrl-m
Hint: Ctrl-m command is equal to RETURN key in Unix systems

DELETE: The DELETE key stops a program/command immediately, without waiting for it to finish. DELETE can be achieved equivalently with ctrl-c.
Hint: Ctrl-c Command you can use to interrupt the process.

Ctrl-s: Ctrl-s pauses the output and the program is suspended until you sta…

Solidity: 6 Top Interview Questions

Solidity is the prime language to write the logic for smart contracts in Ethereum blockchain. These are selected interview questions refresh before you take an interview.

Interview Questions on Solidity

1. What is Solidity?

A) Solidity is the main language that you can use to write programs in Blockchain, such as smart contracts.

2. Where the Solidity programs run in Ethereum?

A). Those will run in EVM. You can also call it an Ethereum Virtual Machine.

3. What kind of logic a Smart Contract can contain?

A contract in the sense of Solidity is a collection of code (its functions) and data (its state) that resides at a specific address on the Ethereum blockchain

4). Can the source code of smart contracts accessible to the outside world? 

A). No, it is not possible to access source code to the network. Also, there is limited access to one smart contract logic to the other smart contract logic. Eve, file system, and other processes cannot access the source code.

Actually, the code is sandboxed and you cannot access it.

5). How many accounts are present in Ethereum?

A). There are two - One is external and the other one is a contract account.

6). What is Remix?

A). This is an online platform to develop smart contracts. Here, you can use solidity programs and develop your own smart contracts.



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