Automate switching Sagem F@ST DOCSIS modem to bridge mode on power cycling

bridge.sh

#!/bin/bash

if ping -c 1 -t 5 192.168.0.1 2>&1 >/dev/null; then
  KEY=$(curl -s http://192.168.0.1/login.html | grep 'var sessionkey' | grep -o -E '[0-9]+')
  COOKIE=$(curl -s -d 'loginUsername=admin&loginPassword=PASSWORD' -X POST http://192.168.0.1/postlogin.cgi?sessionKey=$KEY -c - -O /dev/null | grep -m 1 web_cookie | awk '{print $7}')

  CONTENT=$(mktemp)
  curl -s -b "web_cookie=$COOKIE" http://192.168.0.1/reseau.html > $CONTENT
  KEY=$(grep 'var sessionkey' $CONTENT | grep -o -E '[0-9]+')
  grep -q "enblBridging = '0'" $CONTENT && curl -s -b "web_cookie=$COOKIE" -d 'PrimSecurity2GRadio=1' -X POST http://192.168.0.1/reseau-pa1-eRouterMode.cgi?sessionKey=$KEY -m 5
  rm $CONTENT
fi