Recursively copies the given "file" to all the directories inside the "root" folder. http://www.hackforums.net/showthread.php?tid=4462689&pid=42561339

NeymarS.d

import std.stdio;
import std.file;
import std.path : buildPath;
import std.exception : enforce;

int main(string[] args)
{
	string root;
	string file;

	if(args.length < 3)
	{
		writefln("Usage : %s root_dir file", args[0]);
		return 0;
	}
	root = args[1];
	file = args[2];
	enforce(file.exists, file ~ " does not exist.");

	auto entries = dirEntries(root, SpanMode.depth);
	while(!entries.empty)
	{
		try
		{
			entries.popFront;
			if(entries.front.isDir)
				copy(file, buildPath(entries.front, file));
		}
		catch(FileException e)
		{
			writeln("Failed to copy ", file, " to ", entries.front, " : ", e.msg);
		}
	}

	return 0;
}