GE.cpp

#include <iostream>
#include <cstdlib>

/**
 * Compile and run. On a linux system with the output file named "GE" and
 * invoked by typing ./GE in the bin. directory, the output is
 * ./GE
 **/
 
int main()
{
    std::cout << std::getenv("_") << "\n";
    return 0;
}