Git user.email mass changer

change_emails.bash

#!/usr/bin/env bash

# Did your company change its email domain?
# Use this handy script to change all of your git repos quickly and easily!
# Don't worry, it'll only the change the repos where user.email was set to the old one!

# Usage:   change_emails.bash username          old_domain       new_domain
# Example: change_emails.bash maxine.mustermann boringdomain.com exciting.io

EMAIL_USER="$1"
OLD_DOMAIN="$2"
NEW_DOMAIN="$3"

change_email() {
  pushd $1; 
  if [[ "$(git config user.email)" == "${EMAIL_USER}@${OLD_DOMAIN}" ]]; then 
    git config user.email "${EMAIL_USER}@${NEW_DOMAIN}";
  fi;
  popd;
}
export -f change_email;
find $1 -iname ".git" -exec bash -c 'change_email "$0"' {} \;