Why Git Dominates Version Control: From Linus’s DIY System to Modern Workflows

Many people know that Linus Torvalds created the open‑source Linux kernel in 1991, and that Linux has grown into the dominant server operating system.

The rapid expansion of Linux relied on volunteers worldwide, raising the question of how the massive codebase was managed.

Before 2002, contributors sent patches as diffs to Linus, who manually merged them. Linus refused to use centralized version‑control systems such as CVS or SVN because they were slow, required network access, and conflicted with the open‑source ethos.

In 2002, Linus adopted the commercial distributed system BitKeeper, which BitMover offered free to the Linux community. By 2005, after community members attempted to reverse‑engineer BitKeeper’s protocol, BitMover withdrew the free license.

Faced with losing BitKeeper, Linus wrote his own distributed version‑control system in C within two weeks—Git. Within a month the Linux source tree was managed by Git, and the tool quickly became the most popular DVCS, especially after GitHub launched in 2008.

If BitMover had not threatened the community, Git might never have become the free, powerful tool it is today.

Git is a distributed version‑control system, unlike centralized systems (CVS, SVN) where a single server stores the repository. Centralized VCS require network connectivity for every operation and can become bottlenecks when bandwidth is low.

In a distributed system each developer’s machine holds a complete copy of the repository, allowing offline work and peer‑to‑peer exchange of changes. A central server can still be used as a convenient exchange point, but it is not required.

Distributed VCS provide higher safety: if one machine fails, any other copy can restore the full history, whereas a central server failure halts all work.

Other version‑control tools mentioned include the early open‑source CVS, the more stable SVN, commercial systems like IBM ClearCase and Microsoft VSS, and distributed alternatives such as Mercurial and Bazaar. Git remains the fastest, simplest, and most widely adopted.

Beyond version control, Git also serves as a content‑management and workflow system. The article’s purpose is to illustrate what Git can do and how it fundamentally differs from SVN, helping readers transition from centralized to distributed workflows.

Git is distributed while SVN is not.

Git stores content as metadata (objects) rather than plain files.

Git’s branching model is lightweight and easy to manage compared to SVN’s directory‑based branches.

Git lacks a single global revision number; it uses SHA‑1 hashes, whereas SVN provides sequential, human‑readable revision numbers.

Git ensures content integrity with SHA‑1 hashing, offering stronger protection against corruption than SVN.