Sage-Tips

What are pipes and streams and how are they related?

A pipe is a communication channel between two processes. It has a writing end and a reading end. When on open one of these two end, one get a (writing or reading) stream. So in a first approximation there is a stream at each end of a pipe.

What is the difference between pipe and pipeline?

The pipeline is series of straight pipe welded together over a long distance. For example, the West-East Pipeline in China is 8,200 KMs longs. Piping is a complex network of pipe & fittings within the defined boundaries of the plant.

What is the difference between a pipe and a file?

4 Answers. Almost everything in Linux can be considered a file, but the main difference between a regular file and a named pipe is that a named pipe is a special instance of a file that has no contents on the filesystem.

What is pipe in computer science?

In computer programming, especially in UNIX operating systems, a pipe is a technique for passing information from one program process to another. Basically, a pipe passes a parameter such as the output of one process to another process which accepts it as input.

What are streams and pipes?

Streams are unix pipes that let you easily read data from a source and pipe it to a destination. Simply put, a stream is nothing but an EventEmitter and implements some specials methods. Depending on the methods implemented, a stream becomes Readable, Writable, or Duplex (both readable and writable).

What do you meant by pipe how does a pipe may differ from a queue?

The pipe is the Unix IPC form to provide a flow of information in one direction. Message Queue is a System VIPC form to store a list of messages. A pipe can be created using pipe() function which returns two file descriptors, one is for reading and another is for writing.

What is difference between power piping and process piping?

Process piping is used to deliver liquids, gasses, and chemicals to areas of a manufacturing plant that handle the mixing of products. Power piping, on the other hand, is installed in electric power generating buildings and central heating and cooling systems for a large area.

What is pipe file?

Pipes and FIFOs (also known as named pipes) provide a unidirectional interprocess communication channel. A FIFO (short for First In First Out) has a name within the filesystem (created using mkfifo(3)), and is opened using open(2). Any process may open a FIFO, assuming the file permissions allow it.

What are named pipes in Linux?

A FIFO, also known as a named pipe, is a special file similar to a pipe but with a name on the filesystem. Multiple processes can access this special file for reading and writing like any ordinary file. Thus, the name works only as a reference point for processes that need to use a name in the filesystem.

What are pipes explain use of pipes?

A pipe is a form of redirection (transfer of standard output to some other destination) that is used in Linux and other Unix-like operating systems to send the output of one command/program/process to another command/program/process for further processing. You can make it do so by using the pipe character ‘|’.

What is the difference between a pipe and a stream in Unix?

V8 Unix used streams. In most cases, clists and streams are used to implement a portion of the link between a user process (specifically, a file descriptor) and a character device driver (for example, a serial port or a pty). Pipes are also a queue, but they link user processes (specifically, a pair of file descriptors).

What is the difference between a socket and a pipe?

Both pipes and sockets handle byte streams, but they do it in different ways… pipes only exist within a specific host, and they refer to buffering between virtual files, or connecting the output / input of processes within that host. There are no concepts of packets within pipes.

What is the difference between a queue and a pipe?

Pipes are also a queue, but they link user processes (specifically, a pair of file descriptors). There are a variety of implementations of pipes, including sockets; a special type of file; and even STREAMS (STREAMS is a derivative of V8 streams.) So, streams and pipes are both implementations of a queue, but they are used in different situations.

What is the difference between a CLIST and a pipe?

In most cases, clists and streams are used to implement a portion of the link between a user process (specifically, a file descriptor) and a character device driver (for example, a serial port or a pty). Pipes are also a queue, but they link user processes (specifically, a pair of file descriptors).