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3 years ago

What system calls have to be executed by a command interpreter? Why is it usually separate from the kernel?

Computers and Technology

1 answer:

Licemer1 [7]3 years ago

6 0

Answer:

The exec command by interpreter to start new process

Explanation:

On Unix systems, a call to the fork system must be made followed by a call to the e x e c system to begin a new process. The fork call clones the process that is currently running, while the executive call overlays a new process based on a different executable over the calling process.

It is seperate from Kernal because

It Read user commands or a script and execute them, generally turning them into one or more system calls. Is usual It is not part of the kernel since the command interpreter is subject to change.

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lutik1710 [3]

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4 years ago

Read 2 more answers

Create a script to input 2 numbers from the user. The script will then ask the user to perform a numerical calculation of additi

ohaa [14]

Answer:

The code given is written in C++

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Code:

#include <iostream>

int main()

{

// variable declaration

float numberA;

float numberB;

int operation;

float result=0;

//number request

std::cout<<"Type first number:\n"; std::cin>>numberA;

std::cout<<"Type second number:\n"; std::cin>>numberB;

//Operation selection

cout << "Select an operation\n";

cout << "(1) Addition\n";

cout << "(2) Subtraction\n";

cout << "(3) Multiplication\n";

cout << "(4) Division\n";

std::cout<<"Operation:\n"; std::cin>>operation;

switch(operation){

case 1:

result = numberA+numberB;

break;

case 2:

result = numberA-numberB;

break;

case 3:

result = numberA*numberB;

break;

case 4:

result = numberA/numberB;

break;

default:

std::cout<<"Incorrect option\n";

}

//Show result

std::cout<<"Result is:"<<result<<::std::endl;

return 0;

}

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3 years ago

inn [45]

Answer:

True

Explanation:

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Your welcome

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3 years ago

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Elena L [17]

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Explanation:

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4 years ago