Im following the tutorial below to install git.

https://help.github.com/articles/set-up-git

However when I get to the end where I need to install the helper into the same directory where Git itself is installed i get the following error:

Davids-iMac:~ davidcavanagh$ which git
/usr/bin/git
Davids-iMac:~ davidcavanagh$ sudo mv git-credential-osxkeychain /usr/bin
mv: rename git-credential-osxkeychain to /usr/bin/git-credential-osxkeychain: No such file     
or directory
Davids-iMac:~ davidcavanagh$ 

Edit: I am now getting the following error when I install git and then run git -version

Davids-iMac:~ davidcavanagh$ git -version
/usr/bin/git: line 1: syntax error near unexpected token `newline'
/usr/bin/git: line 1: `<?xml version="1.0" encoding="UTF-8"?>'
I was following this tutorial guide:https://help.github.com/articles/set-up-git

I have also tried using home-brew as well and I get the following error when I do this:

Davids-iMac:~ davidcavanagh$ ruby -e "$(curl -fsSkL raw.github.com/mxcl/homebrew/go)"
==> This script will install:
/usr/local/bin/brew
/usr/local/Library/...
/usr/local/share/man/man1/brew.1

Press ENTER to continue or any other key to abort
==> Downloading and Installing Homebrew...
Failed during: git init -q

Can anyone help? Thanks