Chia nho file van ban hoac CSV

Cat mot file lon thanh nhieu file nho, lap lai dong tieu de neu can.

Cong cu dang duoc lam

Phan engine dung chung da xong; cong cu nay dang cho duoc noi vao. Trong luc cho, ban co the dung CSV sang JSON, JSON sang CSV hoac doi ky tu phan cach.