#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char **argv)
{
     size_t i, j, len;
     char *msg = argc <= 1 ? "yes" : argv[1];
     
#if defined(_PAGE_ALIGN)
     size_t size = sysconf(_SC_PAGESIZE);
     char *mem;
     posix_memalign((void**) &mem, size, size);
#elif defined(_PAGE_SIZE)
     size_t size = sysconf(_SC_PAGESIZE);
     char *mem = malloc(size);
#elif defined(_BUFSIZ)
     size_t size = BUFSIZ;
     char mem[BUFSIZ];
#else
     size_t size = strlen(msg) + 1;
     char *mem[size + 1];
#endif

     len = strlen(msg);
     size = (size / len) * len;
     for (i = 0, j = 0; i < size; i++) {
	  if (j == len) {
	       mem[i] = '\n';
	       j = 0;
	  } else {
	       mem[i] = msg[j++ % len];
	  }
     }

#if defined(_NO_BUFFER)
     setvbuf(stdout, NULL, _IONBF, size);
#elif defined(_LINE_BUFFER)
     setvbuf(stdout, NULL, _IOLBF, size);
#elif defined(_BLOCK_BUFFER)
     setvbuf(stdout, NULL, _IOFBF, size);
#endif

     for (;;) {
#if defined(_USE_WRITE)
	  write(STDOUT_FILENO, mem, size);
#else
	  fwrite(mem, 1, size, stdout);
#endif
     }
}