Rafael rgarcia

Git Submodules basic explanation

Why submodules?

In Git you can add a submodule to a repository. This is basically a repository embedded in your main repository. This can be very useful. A couple of usecases of submodules:

Separate big codebases into multiple repositories.

Resize a Hard Disk for a Virtual Machine

Our Virtual Machines are provisioned using Vagrant from a Linux base box to run using VirutalBox. If the Hard Disk space runs out and you cannot remove files to free-up space, you can resize the Hard Disk using some VirtualBox and Linux commands.

Some assumptions

The following steps assume you've got a set-up like mine, where:

	# Assuming Ubuntu 10.04 with git already installed.
	#
	# Make sure to secure your server: http://www.andrewault.net/2010/05/17/securing-an-ubuntu-server/

	# These instructions are based on:
	# http://sitaramc.github.com/gitolite/doc/1-INSTALL.html:

	# First, get you id_rsa.pub onto the server as /tmp/YourName.pub
	scp ~/ssh/id_rsa.pub [email protected]:/tmp/

	// A simple sub command parser based on the flag package
	package subcommand

	import (
	"flag"
	"fmt"
	"os"
	)

	type subCommand interface {