For Your Information

"FYI" is a common abbreviation of "for your information". The term, originally a wire service abbreviation used by journalists, is commonly used in email, instant messaging and other messages to indicate an informational message or explanatory statement not suggesting any action, or requiring a response. The abbreviation is also commonly used in spoken conversations.

Read Eval Print Loop

A read–eval–print loop (REPL), also termed an interactive top-level or language shell, is a simple interactive computer programming environment that takes single user inputs, executes them, and returns the result to the user; a program written in a REPL environment is executed piecewise. Common examples include command-line shells and similar environments for programming languages, and the technique is very characteristic of scripting languages.

Unix-to-Unix Copy

UUCP 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. The UUCP suite also includes uux (user interface for remote command execution), uucico (the communication program that performs the file transfers).