olemus
(salvestus)seadmefail, mille
lugemine ja kirjutus toimub
plokkhaaval, st mitte märkhaaval

ülevaateid
https://unix.stackexchange.com/questions/60034/what-are-character-special-and-block-special-files-in-a-unix-system

https://www.datacore.com/blog/three-types-of-storage-block-file-object/

https://www.linux.com/blog/file-types-linuxunix-explained-detail