bash console function for rails and sinatra.sh

function sc {
  if [ -x script/console ]; then
    script/console
  else
    sinatra_rb=`egrep -l "^require.+sinatra.$" *.rb 2>/dev/null`
    if [ -e $sinatra_rb ]; then
      irb -r $sinatra_rb
    else
      irb
    fi
  fi
}