# Creating a Happy Git Environment on OS X
[Step 1: Install Git](https://gist.github.com/2722851)
brew install git bash-completion
Configure things:
git config --global user.name "Your Name"
git config --global user.email "you@example.com"
git config --global alias.co checkout
git config --global apply.whitespace nowarn
Setup an SSH key
ssh-keygen
Hit return a couple of times -- leave password blank if you want.
cat ~/.ssh/id_rsa.pub | pbcopy
Paste that code into your [settings page](https://github.com/account) on your repository host(s).
Get happy Git colors. Paste the following into your `~/.gitconfig` file:
[color]
branch = auto
diff = auto
status = auto
[color "branch"]
current = yellow reverse
local = yellow
remote = green
[color "diff"]
meta = yellow bold
frag = magenta bold
old = red bold
new = green bold
[color "status"]
added = yellow
changed = green
untracked = cyan
Create a `~/.gitexcludes` file and paste in this:
.DS_Store
There, now you don't have to ignore that every time.
### Bash Fanciness
Add the following to your `~/.bash_profile` or `~/.bashrc`:
source /usr/local/git/contrib/completion/git-completion.bash
GIT_PS1_SHOWDIRTYSTATE=true
export PS1='[\u@mbp \w$(__git_ps1)]\$ '
That will add tab auto-completion for Git branches, display the current branch on your prompt, and show a '*' after the branch name if there are unstaged changes in the repository, and a '+' if there are staged (but uncommitted) changes. It will look something like this:
[user@computer ~/Sites/example.com (master*)]$
### Bonus
If you want to have a different email address for a particular project (a personal project on your work computer, perhaps?), just run this command inside that project's folder:
git config user.email "you@example.com"
It's the same command as before, this time just omitting the `--global`.
### Sources
- [PeepCode](http://peepcode.com/products/git)
- [Git Community Book](http://book.git-scm.com/2_setup_and_initialization.html)