命名管道也被称为FIFO文件，它是一种特殊类型的文件，它在文件系统中以文件名的形式存在，但是它的行为却和之前所讲的没有名字的管道（匿名管道）类似。

由于Linux中所有的事物都可被视为文件，所以对命名管道的使用也就变得与文件操作非常的统一，也使它的使用非常方便，同时我们也可以像平常的文件名一样在命令中使用。(A named pipe is also known as the FIFO file, it is a special type of document and its file name in the file system to form, but it is the behavior of pipeline and have said before no name (similar to anonymous pipes).
Because everything in Linux can be seen as a file, so the use of named pipes becomes uniform and the file operation very well, but also make it very convenient to use, and we can also use the same name as the normal file in the order.)