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In object-oriented programming, the command pattern is a behavioral design pattern in which an object is used to encapsulate all information needed to perform an action or trigger an event at a later time. This information includes the method name, the object that owns the method and values for the method parameters.
A screenshot of the original 1971 Unix reference page for glob – the owner is dmr, short for Dennis Ritchie.. glob() (/ ɡ l ɒ b /) is a libc function for globbing, which is the archetypal use of pattern matching against the names in a filesystem directory such that a name pattern is expanded into a list of names matching that pattern.
Photograph showing Balisor beacons in use on high voltage cables Balisor is a system of illuminated beacons for high voltage power lines using a cold-cathode low-pressure neon lamp , [ 1 ] used as an aircraft warning light .
The beacon mode service is a Consultative Committee for Space Data Systems (CCSDS) telecommunications service aimed at spacecraft which are not communicated with (on a daily basis) via NASA's Deep Space Network. It is primarily designed to relay a spacecraft's "health" information, and secondarily its telecommunications status, using a simple ...
During the day, the lights may not easily be seen and therefore leading lights are often fitted with secondary visual aids, e.g. large red flags with wide black lines running down them. When both red flags and black lines line up, the navigator knows that the vessel is on the correct bearing.
A beacon is an intentionally conspicuous device designed to attract attention to a specific location. A common example is the lighthouse , which draws attention to a fixed point that can be used to navigate around obstacles or into port.
It includes all commands that are standardized by the Internet Engineering Task Force (IETF) in RFC 959, plus extensions. Note that most command-line FTP clients present their own non-standard set of commands to users. For example, GET is the common user command to download a file instead of the raw command RETR.
fortune is a program that displays a pseudorandom message from a database of quotations. Early versions of the program appeared in Version 7 Unix in 1979. [1] The most common version on modern systems is the BSD fortune, originally written by Ken Arnold. [2]