In macOS, running applications have been variously identified by a small black triangle (Mac OS X 10.0-10.4) a blue-tinted luminous dot (Mac OS X 10.5-10.7), a horizontal light bar (OS X 10.8 and 10.9), and a simple black or white dot (OS X 10.10-present). If the program is running, there isn't an ellipsis on the icon. The Dock indicates if a program is not running by showing an ellipsis below its icon. The icon for the Workspace Manager and the Recycler are always visible. In NeXTSTEP and OPENSTEP, the Dock is an application launcher that holds icons for frequently used programs. Part of the macOS Core Services, Dock.app is located at /System/Library/CoreServices/. Any application can be dragged and dropped onto the Dock to add it to the dock, and any application can be dragged from the dock to remove it, except for Finder and Trash, which are permanent fixtures as the leftmost and rightmost items (or highest and lowest items if the Dock is vertically oriented), respectively.

iOS has its own version of the Dock for the iPhone and iPod Touch, as does iPadOS for the iPad.ДЄpple applied for a US patent for the design of the Dock in 1999 and was granted the patent in October 2008, nearly a decade later. The earliest known implementations of a dock are found in operating systems such as RISC OS and NeXTSTEP. The Dock is also a prominent feature of macOS's predecessor NeXTSTEP and OPENSTEP operating systems. It is used to launch applications and to switch between running applications. The Dock is a prominent feature of the graphical user interface of macOS.

There are bigger distributed grid computing efforts, such as the search for extra-terrestrial life project and the protein analysis project, but the Linux-powered LCG is probably the largest dedicated distributed grid computing project.Graphical user interface feature by Apple The LHC isn't the fastest computer in the world, but it may set the record for being the biggest computer the world has ever seen, since it's made up of more than 100,000 processors from over 170 sites in 34 countries. Fortunately, Linux is great at super-computing.Д¬ERN is also using Scientific Linux to run its LCG ( LHC Computing Grid). With the LHC, CERN will be using it to manage both the systems themselves and to make sense of the 15 petabytes - that's 15 million gigabytes - of data the LHC is expected to generate every year. This lets every lab create its own custom distributions with minimal effort while retaining compatibility with the base distribution.

Its main goal is to allow scientists to easily customize it by using scripts and Red Hat/Fedora's Anaconda installer. Scientific Linux is meant for use by large research labs such as CERN and the U.S.'s equivalent high-energy physics group, Fermilab. To be exact, its uses a modified version of Scientific Linux, which in turn is based on RHEL ( Red Hat Enterprise Linux). If you were going to blast together TeVs of protons В— an act that might create micro-black holes which, if you were to get in the way of them, would be 'the equivalent of having 87kg (kilograms) of TNT dumped into your body,' as one CERN scientist put it В— which operating system would you want running the show? I'll give you three guesses. The resulting collision will produce showers of new particles, including, scientists hope, the elusive Higgs Boson particle. The LHC will do this by smashing together a pair of particle beams that are shot around the circle in opposite directions at just shy of the speed of light. The biggest, most powerful atom smasher the world has ever seen, the LHC ( Large Hadron Collider), with its 17-mile underground loop and TeVs (Teraelectronvolts) of proton beams, is finally up and running, with Linux in control.ДЄfter some LHC engineering problems were fixed, CERN (European Organization for Nuclear Research)'s LHC is now back to work exploring if the standard theories of both how matter and energy holds up and how the universe was created.

Grid mac os x operating systems