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In computing, redirection is a form of interprocess communication, and is a function common to most command-line interpreters, including the various Unix shells that can redirect standard streams to user-specified locations. The concept of redirection is quite old, dating back to the earliest operating systems (OS).
For example, the dir and ls programs (which display file names contained in a directory) may take command-line arguments, but perform their operations without any stream data input. Unless redirected , standard input is inherited from the parent process.
Fork and its variants are typically the only way of doing so in Unix-like systems. For a process to start the execution of a different program, it first forks to create a copy of itself. Then, the copy, called the " child process ", calls the exec system call to overlay itself with the other program: it ceases execution of its former program in ...
YouTube (formerly YouTube Spotlight) is the official YouTube channel for the American video-sharing platform YouTube, spotlighting videos and events on the platform. Events shown on the channel include YouTube Comedy Week and the YouTube Music Awards .
An important aspect of this, setting Unix pipes apart from other pipe implementations, is the concept of buffering: for example a sending program may produce 5000 bytes per second, and a receiving program may only be able to accept 100 bytes per second, but no data is lost. Instead, the output of the sending program is held in the buffer.
UUCP (Unix-to-Unix Copy) [1] is a suite of computer programs and protocols allowing remote execution of commands and transfer of files, email and netnews between computers.. A command named uucp is one of the programs in the suite; it provides a user interface for requesting file copy operations.
For example, if the command rsync local-file user@remote-host:remote-file is run, rsync will use SSH to connect as user to remote-host. [14] Once connected, it will invoke the remote host's rsync and then the two programs will determine what parts of the local file need to be transferred so that the remote file matches the local one.
Open redirect vulnerabilities are fairly common on the web. In June 2022, TechRadar found over 25 active examples of open redirect vulnerabilities on the web, including sites like Google and Instagram. [30] Open redirects have their own CWE identifier, CWE-601. [31] URL redirection also provides a mechanism to perform cross-site leak attacks ...