Named Pipe(FIFO) and Unnamed Pipe(Pipe) : Differences

Pipes are synchronized way of passing information between processes.

Differences:

Unnamed Pipe(PIPE)	Named Pipe(FIFO)
They are unidirectional.	They can be bidirectional.
They can only be used by related processes (parent/child or child/child having the same parent.)	They can be used by any process (unrelated processes.)
They are opened at the time of creation only.	They are not open at the time of creation.
They exist as long as the file descriptors are open.	They exist as directory entries
They are created by using the function pipe().	They are created by using the function mkfifo().
Eg: int pipe(int fd[2]) fd[0] – descriptor used for reading fd[1] – descriptor used for writing	Eg: int mkfifo(char *path, mode_t mode)