// test with: echo %PATH%

#include <stddef.h>
#include <unistd.h>

int main()
{
#ifdef __linux__
	char *path = "/bin/sh";
#elif _WIN32
	char *path = "c:\\windows\\system32\\cmd.exe";
#endif
	char * const argv[] = {path, NULL};
	char * const envp[] = {NULL};
	execve(path, argv, envp);
}