text: #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  
  void be_nice_to_people()
  {
      gid_t gid = getegid();
      setresgid(gid, gid, gid);
  }
  
  void vuln(char *input)
  {
  	char buf[64];
  	strcpy(buf, input);
  }
  
  int main(int argc, char **argv)
  {
  	if (argc != 2)
  	{
  		printf("Usage: art_of_the_shell [str]\n");
  		return 1;
  	}
  
  	be_nice_to_people();
  	vuln(argv[1]);
  
  	return 0;
  }
  