DD-WRT Commands

# AUTO RANDOM MAC ADDRESS

#!/bin/ash
MAC=`(date; cat /proc/interrupts) | md5sum | sed -r 's/^(.{10}).*$/\1/; s/([0-9a-f]{2})/\1:/g; s/:$//;'`
echo "00:${MAC}"
ifconfig eth1 hw ether 00:${MAC}
nvram set def_hwaddr="00:${MAC}"
nvram set wan_hwaddr="00:${MAC}"
stopservice wan
startservice wan

# AUTO CLEAR NVRAM

for i in `nvram show | grep traff- | cut -f1 -d=""`; do nvram unset $i; done

# SPEAK SIGNAL STRENGTH

#! /bin/bash
# Use "festival" to say out loud how much signal strength we have

# The IP address of the WRT
ip_addr="10.0.0.1"

# The username and password for the WRT
user="Admin"
pass="password"

# Tempory file used to hold the data from the WRT
tmp_file=/tmp/wrt.status

echo
echo "The signal level is:-"
echo
echo "The signal level is" | festival --tts

while true ; do
  wget --http-user=$user --http-password=$pass http://$ip_addr/Status_Wireless.live.asp -O $tmp_file -o /dev/null
  signal=`awk  -F "'" '/active_wireless/ { print   }' $tmp_file`
  echo $signal | awk '{printf"Signal  :  ""\t";for(;j<;j++)printf"=";printf"\n"}'

  if [[ -n $signal ]] ; then
    echo $signal | festival --tts
  else
     echo "Not associated" | festival --tts
  fi
done

#!/bin/sh

# This script solves an intermitent problem on my
# NetGear WNDR3300 wireless N radio.  Every few
# hours,  the wireless N radio stops broadcasting
# and cannot be seen by wireless clients.  Bringing
# the wireless interface down and then back up
# resolves the issue.  This script pings a
# wireless client, in my case, a WET610N wireless
# bridge that should always remain up and only
# connects to the wireless N radio.  If the
# ping fails twice within a given time, it
# brings the interface down and then back up.

# A wireless client that should always be up
CLIENT_IP=192.168.1.1

# Wireless interface that disappears
INTERFACE=`nvram get wl0_ifname`

# seconds to wait after failed ping to try again
FAIL_AGAIN=10

# seconds between checks
CHECK_EVERY=60

# after cycling, wait this many seconds
AFTER_CYCLE=360

# Client must be up before starting main loop
while true
do
  if ping -c 1 ${CLIENT_IP} >/dev/null
  then
    echo "${CLIENT_UP} ok - begining main loop"
    break
  fi
done

# main script
while sleep ${CHECK_EVERY}
do
  if ping -c 1 ${CLIENT_IP} >/dev/null
  then
    echo "${CLIENT_IP} ok"
  else
    echo "${CLIENT_IP} dropped one"
    sleep ${FAIL_AGAIN}
    if ! ping -c 1 ${CLIENT_IP} >/dev/null
    then
      echo "${CLIENT_IP} dropped two, sending restarting ${INTERFACE}"
      # on Atheros hardware instead use: ifconfig ${INTERFACE} down
      wl -i ${INTERFACE} down
      sleep 3
      # on Atheros hardware instead use: ifconfig ${INTERFACE} up
      wl -i ${INTERFACE} up
      sleep ${AFTER_CYCLE}
    fi
  fi
done 2>&1