"r" shortcut in bash for "rails" and "rake"

.bashrc

# Shortcut for `bundle exec rails` and `bundle exec rake`.
# If bin/rails and bin/rake are available, use them instead as they are much
# faster to execute than `bundle exec`.
function r() {
  if [[ "g|generate|c|console|s|server|db|dbconsole|r|runner|new" =~ $1 ]]; then
    if [ -x bin/rails ]; then
      bin/rails "$@"
    elif [ -x script/rails ]; then
      script/rails "$@"
    else
      rails "$@"
    fi
  else
    if [ -x bin/rake ]; then
      bin/rake "$@"
    elif [ -x script/rake ]; then
      script/rake "$@"
    else
      rake "$@"
    fi
  fi
}

rake.rb

#!/usr/bin/env ruby

# script/rake
# Run rake after loading Rails/Bundler; faster than `bundle exec rake`

APP_PATH = File.expand_path('../../config/application',  __FILE__)
require File.expand_path('../../config/boot',  __FILE__)
require 'rake'

Rake.application.run

Read the blog post associated with this Gist: Invoke rails and rake faster! And with fewer mistakes.