git info for version control

given this:

  $ git status
	# On branch muzzle_flash
	# Changes not staged for commit:
	#   (use "git add <file>..." to update what will be committed)
	#   (use "git checkout -- <file>..." to discard changes in working directory)
	#
	#	modified:   Assets/Ammo/CannonBall.prefab


you can see if you've change in your working directory:

	$ git diff Assets/Ammo/CannonBall.prefab
	diff --git a/Assets/Ammo/CannonBall.prefab b/Assets/Ammo/CannonBall.prefab
	index e7be47d..a36e5ea 100644
	--- a/Assets/Ammo/CannonBall.prefab
	+++ b/Assets/Ammo/CannonBall.prefab

while this produces nothing:

	$ git diff Assets/Ammo/TankShell.prefab

this gives you commit number:

	$ git log -n 1 Assets/Ammo/CannonBall.prefab
	commit 0801fe0714e684a49fad139dad6bea8841200fab