#include <iostream>
#include <fstream>
#include <string>

extern const char **environ; // see 'man environ'

int main(int argc, const char* argv[])
{
	if(argc < 2)
	{
		return 0;
	}

	std::string cmd = argv[1];

	if(cmd == "envdump")
	{
		if(argc < 3)
		{
			return 0;
		}
		std::ofstream ostrm(argv[2], std::ios::binary);
		for(auto current = environ; *current; ++current)
		{
			ostrm << (*current) << "\n";
		}
	}

	if(cmd == "retval")
	{
		if(argc < 3)
		{
			return 0;
		}
		return std::stoi(argv[2]);
	}

	if(cmd == "abort")
	{
		abort();
	}

	if(cmd == "throw")
	{
		throw "ouch";
	}

	return 0;
}