ram.fish

function ram
  set -l sum 0
  set -l app $argv[1]

  if [ -z $app ]
    echo "First argument - pattern to grep from processes"
  else
    for i in (ps aux | grep -i "$app" | grep -v "grep" | awk '{print $6}')
      set sum (math $sum + $i)
    end

    if [ $sum != "0" ]
      echo "$app uses $sum MBs of RAM."
    else
      echo "There are no processes with pattern '$app' are running."
    end
  end
end