Miscellany

segment .data
	source db 'Best of Times to learn is Now.',0x0A, 0x0A
	sm db '',0x0A, 0x0A
	target db '',0x0A, 0x0A
	tm db '',0x0A, 0x0A
	len equ $ - source

segment .text
	global _start

_start:
	mov eax, 4
	mov ebx, 0
	mov ecx, source
	mov edx, len
	int 0x80

	mov ecx, len
	mov esi, 0
	mov edi, 0

space_loop:
	mov al, [source+esi]
	mov bl, '.'
	cmp al, bl
	je no_caps
	mov bl, ' '
	cmp al, bl
	je end_loop
	mov [sm+edi], al
	inc edi
   
end_loop:
	inc esi
	loop space_loop

no_caps:
	mov esi,0
	mov al, [sm+esi]
	mov bl, '.'
	cmp al, bl
	je print
	mov bl, '['
	cmp al, bl
	jae end_caps
	add al, 20h
	mov [sm+esi], al

end_caps:
	inc esi
	loop no_caps

print:
	mov eax,4
	mov ebx,1
	mov ecx,sm
	mov edx,len
	int 0x80

exit:
	mov eax, 1
	mov ebx, 0
	int 0x80