.zshrc

# Show how much RAM application uses.
# $ ram safari
# # => safari uses 154.69 MBs of RAM.
function ram() {
  local sum
  local items
  local app="$1"
  if [ -z "$app" ]; then
    echo "First argument - pattern to grep from processes"
  else
    sum=0
    for i in `ps aux | grep -i "$app" | grep -v "grep" | awk '{print $6}'`; do
      sum=$(($i + $sum))
    done
    sum=$(echo "scale=2; $sum / 1024.0" | bc)
    if [[ $sum != "0" ]]; then
      echo "${fg[blue]}${app}${reset_color} uses ${fg[green]}${sum}${reset_color} MBs of RAM."
    else
      echo "There are no processes with pattern '${fg[blue]}${app}${reset_color}' are running."
    fi
  fi
}