Replace default git user and email by a specified value for all *.github.com repositories.

set-github-user-and-email

#!/bin/bash
#
# Replace default git user and email by a specified value 
# for all *.github.com repositories.
#
# Installation:
# 1. Save this script to /usr/local/bin/set-github-user-and-email
# 2. Replace PUT_YOUR_NAME_HERE and PUT_YOUR_EMAIL_HERE
# 3. chmod 755 /usr/local/bin/set-github-user-and-email
# 4. alias git=/usr/local/bin/set-github-user-and-email
#
# Taken from http://stackoverflow.com/a/13752961
#

# "Real" git is the second one returned by 'which'
REAL_GIT=$(which -a git | sed -n 2p)

# Does the remote "origin" point to GitHub?
if ("$REAL_GIT" remote -v 2>/dev/null |
    grep '^origin\b.*github.com.*(push)$' >/dev/null 2>&1); then

    # Yes.  Set username and email that you use on GitHub.
    export GIT_AUTHOR_NAME='PUT_YOUR_NAME_HERE'
    export GIT_AUTHOR_EMAIL='PUT_YOUR_EMAIL_HERE'

fi

"$REAL_GIT" "$@"