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copied!<p>You are not the first one to think about a <a href="http://wincent.com/a/about/wincent/weblog/archives/2007/07/build_numbers_i.php" rel="nofollow noreferrer">"revision number" in Git</a>, but '<code>wc</code>' is quite dangerous, since commit can be erased or squashed, and the history revisited.</p> <p>The "revision number" was especially important for Subversion since it <a href="http://macresearch.org/whos-git" rel="nofollow noreferrer">was needed in case of merge</a> (SVN1.5 and 1.6 have improved on that front).</p> <p>You could end up with a pre-commit hook which would include a revision number in the comment, with an algorithm <em>not involving</em> looking up the <em>all</em> history of a branch to determine the correct number.</p> <p><a href="http://jameswestby.net/weblog/2008/Mar" rel="nofollow noreferrer"><strong>Bazaar</strong></a> actually came up with <a href="http://thread.gmane.org/gmane.comp.version-control.bazaar-ng.general/38388" rel="nofollow noreferrer">such an algorithm </a>, and it may be a good starting point for what you want to do.</p> <p>(As <a href="https://stackoverflow.com/questions/677436/how-to-get-the-git-commit-count/677566#677566">Bombe's answer</a> points out, Git has actually an algorithm of its own, based on the latest tag, plus the number of commits, plus a bit of an SHA-1 key). You should see (and upvote) his answer if it works for you.</p> <hr> <p>To illustrate <a href="https://stackoverflow.com/questions/677436/how-to-get-the-git-commit-count/677529#677529">Aaron's idea</a>, you can also <a href="http://www.stompy.org/2008/08/14/xcode-and-git-another-build-script/" rel="nofollow noreferrer">append the Git commit hash into an application’s "info" file</a> you are distributing with your application.</p> <p>That way, the about box would look like:</p> <p><img src="https://i.stack.imgur.com/xPr0b.png" alt="About box"></p> <p>The applicative number is part of the commit, but the 'application’s "info" file' is generated during the packaging process, effectively linking an <em>applicative</em> build number to a technical revision <em>id</em>.</p>

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