Inter Process Communication Objects - pipe()

• In unix system, pipe is known as an inter process communication mechanism.
• A process can write data to pipe, and that data can be read by another process.
• In pipe IPC, the data is handled in fifo i.e first in first out order.
• Pipe does not have any name, it is only created for one use and both ends must be inherited from the single process which created the pipe.
• Since it is a IPC object, it is used to communicate between two process i.e parent and child.
• Pipe is created using pipe function (pipe()). Pipe also creates description pair which can be denoted as fd[0], fd[1]. Primarily fd[0] for reading and fd[1] for writing.
• As pipe sets up, the data can be passed using read and write functions.