10 věcí, které na (U)NIXech nenávidím (diskuse)

[Prasopes]

Je to prekvapive vtipne a misty i pravdive.

The file metaphor is becoming increasingly strained in UNIX: Physical disks are files—these have a fixed size, but you can seek to any point on the disk.

Serial ports are files—these can be read from and written to, but seeking in a serial port has no meaning.

Normal files are also files, and these can be read sequentially or randomly and even increased or reduced in size. Of course, a program that's given a filename has no way of knowing what kind of operations are possible on a file, other than to try an operation and see if it fails. In good UNIX tradition, some of these operations, such as locking an NFS-shared file, will appear to work but silently fail.

[Luboš Doležel (Doli)]

Autor by asi měl začít rozlišovat mezi node (přes mknod), obyčejným souborem, pipe apod., protože Unix mezi tím rozlišuje.

Celkově tato architektura přináší výhody - nějak nevím proč by musel existovat způsob jak zjistit, jestli se v souboru dá seekovat. To musí vědět uživatel - program seek buď potřebuje nebo ne.