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Versionhaldu, also known as version control or source code management, is a system that records changes to a file or set of files over time so that you can recall specific versions later. This is crucial for software development, but can also be applied to any collection of files where tracking modifications is important. The primary benefit of versionhaldu is its ability to revert to previous states of files, helping to recover from errors or to compare different stages of development.

At its core, a versionhaldu system manages a history of revisions. Each revision typically includes a snapshot of the project's files, a commit message describing the changes, and metadata such as the author and timestamp. This allows developers to work collaboratively on projects without overwriting each other's work. When multiple people contribute, the system helps merge their changes together.

Common operations in versionhaldu include committing changes, branching to work on new features independently, merging branches back into the main line of development, and pulling updates from a shared repository. Popular examples of versionhaldu systems include Git, Subversion (SVN), and Mercurial. Git is currently the most widely adopted system due to its distributed nature and robust feature set. Effective use of versionhaldu enhances project stability, facilitates teamwork, and provides a clear audit trail of all modifications.