char buf[100]; main(argc, argv) char **argv; { register i; register char *c1, *c2; if(argc < 3) { write(2, "arg count\n", 10); exit(); } argc--; c1 = buf; c2 = argv[argc]; while(*c1++ = *c2++); c1[-1] = '/'; *c1++ = '.'; *c1 = '\0'; for(i=1; i