Git
In computing, git is an open source project that aims to create. The project was started in April, 2005 by Linus Torvalds to manage his Linux operating system after he drop BitKeeper for controversy. Like BitKeeper, git does not use a centralized server.
According to Linus, git is being developed solely to solve problems he has in maintaining the code base and applying patches to Linux kernel. As such, it lacks a number of features in other similar tools. The differences include "Git can't rename a file; users must instead delete one and recreate it elsewhere with the new name, McVoy said. And it doesn't handle space efficiently; a tiny one-character change to a 1MB file in Git will result in a 2MB file, whereas BitKeeper's file will grow only by one byte." [1]
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The term git is also British slang for an idiot. It is moderately derogatory.