Just sets the configuration options you need for git on a new machine with a BASH wrapper.

git_config

#!/bin/bash

#Change these to tailor git to you
USER_NAME="Chris Sterling"
USER_EMAIL="sterlincexc@colorado.edu"
LOG_MESSAGES_EDITOR="vim"
DIFF_PROGRAM="meld"
echo "Configure GIT"
echo ""
echo "What user name would you like to use? ex) John Doe"
read $USER_NAME
echo "What email address would you like to use? ex) John.Doe@colorado.edu"
read $USER_EMAIL
echo "What program would you like to use to edit log messages? ex) vim"
read $LOG_MESSAGES_EDITOR
echo "What program would you like to use for diffs? ex) meld"
read $DIFF_PROGRAM
#Wipe out the old config file, so we don't step on our tails
sudo rm ~/.gitconfig
#----------------STOP EDITING HERE---------------------#

command_exists ()
{
        type "$1" &> /dev/null ;
        #& runs a command in the background     
        #"> /dev/null" sends any output to nowhere, so we don't get funky text
}

#Configure user settings which save back to the log
git config --global user.name $USER_NAME
git config --global user.email $USER_EMAIL
#What editor would you like to use for log messages?
git config --global core.editor $LOG_MESSAGES_EDITOR
#What program would you like to use for diffs?
if command_exists $DIFF_PROGRAM ; then
        git config --global merge.tool $DIFF_PROGRAM
else
        echo "$DIFF_PROGRAM doesn't exists"
        echo "Would you like to install $DIFF_PROGRAM? (y or n): "
        read $INSTALL_DIFF
        if ["$INSTALL_DIFF" == "y"]; then
                sudo apt-get install $DIFF_PROGRAM
                git config --global merge.tool $DIFF_PROGRAM
        else
                echo "Another program must be used for diffs, the system will use the default\n"
        fi
fi
echo "The git settings as they are now will be dumped."
#Dump git settings
git config --list