I have been looking at all the different types of Unix file: regular files, directories, device files, symbolic link, doors, socket, named pipes,… but I couldn’t find a file type that would behave like a stack/LIFO structure. As most of you know, the advantage of FIFO/named pipe over regular files is the following: from https://askubuntu.com/questions/449132/why-use-a-named-pipe-instead-of-a-file Almost everything in Linux can