Find all git repos under a directory and check what branches they have that aren't merged into origin/master

gitStatus.cs

string target = ".git";
string[] ignored = new [] { "node_modules", "bower_components" };
void Main()
{
	var start = @"c:\projects";
	var maxDepth = 4;
	var dirs = Scan(start, maxDepth).ToList();
	var results = dirs.AsParallel().Select(i => new { dir = i, data = GitStatus(i) }).ToDictionary(i => i.dir, i => i.data);
	results.Dump();
}

string GitStatus(string directory) {
	var proc = Process.Start(new ProcessStartInfo() {
		RedirectStandardOutput = true,
		WorkingDirectory = directory,
		FileName = @"C:\Program Files\Git\cmd\git.exe",
		Arguments = "branch --no-merge origin/master",
		UseShellExecute = false,
	});
	var data = "";
	proc.OutputDataReceived += (s, e) => {
		data += e.Data;
	};
	proc.BeginOutputReadLine();
	proc.WaitForExit();
	return data;
}

IEnumerable<string> Scan(string start, int depth) {
	string[] dirs = new string[0];
	try {
		dirs = Directory.GetDirectories(start);
	} catch {
	}
	foreach(var dir in dirs) {
		var name = Path.GetFileName(dir);
		if(name == target) {
			yield return start;
		}
		if(ignored.Contains(name)) {
			continue;
		}
		if(depth > 1) {
			foreach(var x in Scan(dir, depth-1)) {
				yield return x;
			}
		}
	}
}

The .Dump() is for LinqPad - if you use this elsewhere, just replace that with some calls to write out to console or wherever.