Avoid committing to git as root

git-root-wrapper

#!/usr/bin/env bash

#
# avoid accidentally committing to git repos as root.
# save to /usr/local/bin/git
#

set -eu

git_cmd="${1:-}"

if [[ -n "$git_cmd" ]] ; then
  if [[ "$git_cmd" == 'commit' ]] ; then
    if [[ "$(whoami)" == 'root' ]] ; then
      echo "ERROR: You may not commit as root. Reveal your identity!"
      exit 1
    fi
  fi
fi

/usr/bin/git "$@"