Does this concept only apply to terminal drivers (which is what most sites cover) or to any driver in general?
The terms raw and cooked only apply to terminal drivers. "Cooked" is called canonical and "raw" is called non-canonical mode.
The terminal driver is, by default a line-based system: characters are buffered internally until a carriage return (Enter or Return) before it is passed to the program - this is called "cooked". This allows certain characters to be processed (see
The terminal can be placed into "raw" mode where the characters are not processed by the terminal driver, but are sent straight through (it can be set that INTR and QUIT characters are still processed). This allows programs like
You can read more about this in the "Canonical mode" section of the
The terms get used to describe terminal and disk I/O, but mean different things in each context.
Raw and cooked modes on a terminal device cover processing (character-at-a-time vs. line-at-a-time, there are also a few other differences).
A 'raw' disk device (