Differences between pipe and fifo in linux-general Linux technology-Linux programming and kernel information. For details, refer to the following section. In linux, inter-process communication (IPC) can be achieved through semaphores, file systems, message queues, shared memory, and pipelines. Message Queue and memory management are proposed in System V.
Process Communication involves pipelines, and pipelines are also useful in shell commands. Let's briefly talk about the pipeline:
Pipeline, as its name suggests, can be understood as a pipe in daily life, flowing in and out. It can have half duplex and full duplex. Half Duplex means that only one side can flow in and the other side can flow out. Full Duplex means one side can flow in or out.
Pipe is a half-duplex pipe. Fd [1] is used to write data to the pipeline, while fd [0] is used to read data from the other end. If two processes need to use pipe for communication. At this time, ensure that only one write end and one read end are allowed, that is, fd [1] and fd [0] can have only one.
The following procedure:
