Docunext Technology

This is a nagios check command written by a contractor we hired awhile back:

#!/bin/bash
#  diFFurl (A website content checker.)
#  Version 0.2b (09062006)
#
#
#  TODO: Correct nagios error codes.
#
#  This is a site content check for Nagios,
#  this will grab index from sites specified
#  in .content-check-urls. Store MD5 hash if not
#  stored. Otherwise, it will compare with MD5 hash
#  on the machine. It will only output if a site's MD5
#  hash isn't the same as the stored version.
URL_FILE=/home/contentcheck/.content-check-urls
URL_DIR=/home/contentcheck/.content-check
if ! [ -d $URL_DIR ]; then
    mkdir $URL_DIR
fi
if ! [ -f $URL_FILE ]; then
    echo "new-content-check: $URL_FILE not found"
    exit
fi
for URL in $(cat $URL_FILE); do
    MD5_FILE=$URL_DIR/$(echo $URL | md5sum | cut -d' ' -f1)
    if [ -f $MD5_FILE ]; then
        links -dump "$URL" | md5sum > $MD5_FILE.new
        if ! diff $MD5_FILE $MD5_FILE.new &>/dev/null; then
            echo "New content at $URL"
            mv -f $MD5_FILE.new $MD5_FILE
        else
            rm $MD5_FILE.new
        echo "No content has been changed."
        exit
        fi
        else
                links -dump "$URL" | md5sum > $MD5_FILE
        fi
done

I’m not using this anymore, instead opting for a http_check of each virtual host. The content check is a difficult challenge that I’ll need to do some more thinking on.