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pip (package manager) pip (also known by Python 3 's alias pip3) is a package-management system written in Python and is used to install and manage software packages. [4] The Python Software Foundation recommends using pip for installing Python applications and its dependencies during deployment. [5] Pip connects to an online repository of ...
Pipeline (Unix) A pipeline of three program processes run on a text terminal. In Unix-like computer operating systems, a pipeline is a mechanism for inter-process communication using message passing. A pipeline is a set of processes chained together by their standard streams, so that the output text of each process (stdout) is passed directly ...
fork (system call) In computing, particularly in the context of the Unix operating system and its workalikes, fork is an operation whereby a process creates a copy of itself. It is an interface which is required for compliance with the POSIX and Single UNIX Specification standards. It is usually implemented as a C standard library wrapper to ...
The tee command is normally used to split the output of a program so that it can be both displayed and saved in a file. The command can be used to capture intermediate output before the data is altered by another command or program. The tee command reads standard input, then writes its content to standard output.
However, prior to the introduction of UNIX OS with its "pipes", redirection in operating systems was hard or even impossible to do. [ 2 ] In Unix-like operating systems, programs do redirection with the dup2 (2) system call , or its less-flexible but higher-level stdio analogues, freopen (3) and popen (3) .
Named pipe. In computing, a named pipe (also known as a FIFO for its behavior) is an extension to the traditional pipe concept on Unix and Unix-like systems, and is one of the methods of inter-process communication (IPC). The concept is also found in OS/2 and Microsoft Windows, although the semantics differ substantially.
The implementation of yes on different Unix and Unix-likes was consistently implemented with a simple while-loop. The GNU Project's implementation of yes was much faster than any other implementation, achieved by buffering its output, leading to more output per system call.
Anonymous pipe. In computer science, an anonymous pipe is a simplex FIFO communication channel that may be used for one-way interprocess communication (IPC). An implementation is often integrated into the operating system 's file IO subsystem. Typically a parent program opens anonymous pipes, and creates a new process that inherits the other ...