Do a bash speedtest and reboot router if under 5 MBit

speedtest-restart.sh

#!/bin/bash
# Curl the bandwidth test site for 10 MB file and get speed in bytes/second, reboot cable modem if <5 MBit
# Useful as bash alias that retests and triggers every hour: 
# alias continuously_speedtest='while [ true ]; do echo "Sleeping 1 hour and then speedtesting network"; sleep 3600; bash ~/speedtest-restart.sh; done'

set -o pipefail
echo 'Speedtesting modem now'
DOWN_SPEED=$(curl http://speedtest.wdc01.softlayer.com/downloads/test10.zip  -t 100 -o /dev/null -s -w "%{speed_download}" | sed -E "s/\.[0-9]+//g")
if [ "$?" -ne 0 ]; then
    echo "Speed test failed!"
    exit 1
fi
if [ "$DOWN_SPEED" -lt 625000 ]; then  #625 kB/s = 5 MBit
    echo "Network connection too slow at $DOWN_SPEED, restarting modem and waiting a minute!!!"
    curl -s -o /dev/null http://192.168.100.1/reset.htm?reset_modem=Restart+Cable+Modem
    sleep 60
    echo "Modem should be back, retesting speed"
    DOWN_SPEED=$(curl http://speedtest.wdc01.softlayer.com/downloads/test10.zip  -o /dev/null -s -w "%{speed_download}" | sed -E "s/\.[0-9]+//g")
    echo "After reboot, speed is $DOWN_SPEED"
else
    echo "Modem fast enough at $DOWN_SPEED B/s"
fi