CrapShell.cpp

#include <iostream> // std::cout, std::cin, std::getline
#include <string>   // std::string
#include <unistd.h> // std::chdir, get_current_dir_name()
#include <cstdlib>  // std::system

int main(int argc, char** argv) {
    // Buffer and Return Value
    std::string command_str;
    int return_value = 0;

    // Crap Shell Header
    std::cout << "---= Crap Shell V1.0 =---\n\n";
    while(true) {
        // Print Out Header
        if(return_value != 0) { std::cout << '(' << return_value << ") "; }
        std::cout << get_current_dir_name() << " - crsh> ";

        // Get Command
        std::getline(std::cin, command_str);

        // CD command
        if(command_str[0] == 'c' && command_str[1] == 'd' && command_str[2] == ' ')
        { chdir(&command_str.front() + 3); }

        // Run System Command
        else { return_value = std::system(command_str.c_str()); }
        std::cout << std::endl;
    }
}