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In version control systems, a repository is a data structure that stores metadata for a set of files or directory structure. [1] Depending on whether the version control system in use is distributed, like Git or Mercurial, or centralized, like Subversion, CVS, or Perforce, the whole set of information in the repository may be duplicated on every user's system or may be maintained on a single ...
Git comes with a Tcl/Tk GUI, which allows users to perform actions such as creating and amending commits, creating and merging branches, and interacting with remote repositories. [96] In addition to the official GUI, many 3rd party interfaces exist that provide similar features to the official GUI distributed with Git. [97]
Git [open, distributed] – designed by Linus Torvalds for Linux kernel development; decentralized; goals: fast, flexible, and robust [1] Global Design Platform (GDP) [proprietary, client-server] – design data management for IC design and Perforce infrastructure support; Integrity [proprietary, client-server]
Distributed version control systems (DVCS) use a peer-to-peer approach to version control, as opposed to the client–server approach of centralized systems. Distributed revision control synchronizes repositories by transferring patches from peer to peer. There is no single central version of the codebase; instead, each user has a working copy ...
Distributed, repositories act as peers, and users typically have a local repository with version history available, in addition to their working copies. Concurrency model, how changes to the working copy are managed to prevent simultaneous edits from causing nonsensical data in the repository.
Centralized version control systems, such as Subversion and CVS simply use incrementing numbers as identifiers. [ 10 ] [ 11 ] Distributed version control systems, such as Git , generate a unique identifier by applying a cryptographic hash function to the changeset.
Sally contributes a package A. Sally only runs the current version of the software under one version of Microsoft Windows, and has only tested it in that environment. At more or less regular intervals, CRAN tests Sally's contribution under a dozen combinations of operating systems and versions of the core R language software.
Depending on whether the version control system in use is distributed, like Git or Mercurial, or centralized, like Subversion, CVS, or Perforce, the whole set of information in the repository may be duplicated on every user's system or may be maintained on a single server. [37]