AT&T U-Verse DSL modem/router DSL status checker

att-uverse-dsl-status-checker.sh

#!/usr/bin/env bash
#
# Checks AT&T U-Verse DSL modem for DSL Up/Down status
#
# Compatibility:
#
# Works at least with the following modem/router:
#  Manufacturer     : Pace Plc
#  Model            : 3800HGV-B
#  Software Version : 6.9.1.42-plus.tm
#
# Synopsis:
#
#  Hits the admin page and scans for it for the status
#  and returns an error code indicating what it found.
#
# Return codes:
#
#  return 0 if status us "Up"
#  return 1 if status is "Down"
#  return > 1 if status is anything else

url='http://192.168.1.254'

matched_text=$(curl $url 2>&1 | egrep -io '>(Down|Up)<' | egrep -io '(Down|Up)')

if [ $? == 0 ]; then
    echo "DSL connection '$matched_text' according to $url"
    if [ "$matched_text" == "Up" ]; then
        exit 0
    elif [ "$matched_text" == "Down" ]; then
        exit 1
    fi
fi

if [ -z "$matched_text" ]; then
    echo "Unknown status: (no status found)"
else
    echo "Unknown status: '$matched_text'"
fi
echo "You might want to check the following page in your browser: $url"
exit 2