osrs ping bash

c=1
if [ -n "$1" ]; then
    c="$1"
    echo -e "Averaging over "$c" attempts:\n"
fi

for world in {1..94}
do
    case "$world" in
        # skip worlds that don't exist:
        63|64|71|72|79|80)
            continue
            ;;
        # ping all others $c times and report average
        *)
            ping_time=$(ping -c "$c" oldschool${world}.runescape.com | tail -1 | awk -F '/' '{print $5}')
            echo "World ${world}: ${ping_time} ms"
            ;;
    esac
done