[Verse 1]
Deep in the kernel where hardware meets code
Three driver kingdoms rule the data load
Block devices spinning with sectors aligned
Character streams flowing one byte at a time
[Pre-Chorus]
Network packets dancing through the wire
Each driver type serves a different fire
[Chorus]
Block, Character, Network - remember the three
B-C-N for device harmony
Blocks batch the data, chars stream it clean
Networks route packets through the machine
B-C-N, B-C-N, driving everything
[Verse 2]
Hard drives and USB sticks need block control
Random access magic, sectors make them whole
Buffered and cached for efficient I-O
512 bytes dancing wherever they go
[Pre-Chorus]
Keyboards and terminals need different care
Character drivers handle each keystroke there
[Chorus]
Block, Character, Network - remember the three
B-C-N for device harmony
Blocks batch the data, chars stream it clean
Networks route packets through the machine
B-C-N, B-C-N, driving everything
[Bridge]
Major numbers map to driver types
Minor numbers pick the device that's right
Configuration files tell the kernel how
Modprobe loads the modules here and now
Network stacks climb seven layers high
Ethernet frames and TCP reply
Socket buffers queue the data stream
Protocol handlers fulfill the dream
[Chorus]
Block, Character, Network - remember the three
B-C-N for device harmony
Blocks batch the data, chars stream it clean
Networks route packets through the machine
[Outro]
Device files in dev directory
Each one mapped to driver machinery
From mouse clicks to gigabyte transfers
B-C-N handles all the answers