New replacement algorithm (LRU versus FIFO)

新的替换算法（LRU 与 FIFO）

A pipe is a first-in-first out (FIFO) data structure.

管道是先入先出(FIFO)数据结构。

S_ISFIFO (mode) — is this a pipe or FIFO special file?

S_ISFIFO (mode)——是否为管道或FIFO特殊文件？

The mkfifo command creates a First In First Out (fifo) file.

mkfifo命令将创建一个First In First Out (fifo)文件。

A defined stock rotation system is in place, e. g. FIFO?

现场是否有轮换储存体系，如先进先出？