[Tfug] Checking for updated webpage

[Andrew Ayre]

Paul Lemmons wrote:
> -------- Original Message  --------
> Subject: Re:[Tfug] Checking for updated webpage
> From: Jeff Breadner <jeff at breadner.ca>
> To: TFUG <tfug at tfug.org>
> Date: 09/08/2008 01:45 PM
>>> I'm looking for an app that will monitor a specific webpage and inform
>>> me when it's been updated (the site doesn't provide a feed).  I found
>>> specto, but it wants to pull in the whole GNOME infrastructure.  For
>>> my purposes, a daily cronjob that runs wget and diffs the page might
>>> be the simplest way.  Any suggestions?
>>>
>>>   
>>>     
>>
>> Here's a quickie, untested bash script.  It will notify you whenever 
>> something changes, then update the reference point so you won't get 
>> notified again until things change again.  It doesn't test for 
>> connectivity, you might want to put a ping test "if" statement around 
>> this, or save the wget output to a file and check if the file size is 
>> zero or something if you need it to be more robust.
>>
>> cheers
>>   Jeff
>>
>>
>> #!/bin/bash
>>
>> OLDMD5SUM="$(cat md5sum.old)"
>> NEWMD5SUM="$(wget -q - http://myurl.com | md5sum)"
>>
>> if ! [ "$OLDMD5SUM" = "$NEWMD5SUM" ]
>> then
>>   echo "$NEWMD5SUM" > md5sum.old
>>   echo "http://myurl.com modified on $(date)" | mail -s 
>> "http://myurl.com modified!" me at mydomain.com
>> fi
>>
>>
>> _______________________________________________
>> Tucson Free Unix Group - tfug at tfug.org
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>>
>>   
> I have written a Perl script that does this. It is highly configurable 
> and simple to use. I will send it to you off list.
> 

Sounds useful! How about putting it on a webpage somewhere under the GPL? :)

Andy


-- 
Andy
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