On Mon, Mar 17, 2003 at 08:35:57AM -0500, Douglas, Stuart wrote:
> Yikes...it's the topic that won't go away... :)
>
> Everything is working, just a little too well. Take a look at the script below...no
> matter how I structure the two snapshot ls files that are compared, they are ALWAYS
> deemed different and so always result in an e-mail notification being sent. I've
> tried it both with/without the --full-time option, and also with/without the pipe to
> the md5sum function.
>
> Many have suggested using FAM instead, if I don't get this working I may just punt
> and go that route (resulting in a whole new round of questions for you all, of
> course).
>
> Thanks everyone!
>
> Stuart
>
>
> -----Original Message-----
> From: Anthony E. Greene [mailto:[EMAIL PROTECTED]
> Sent: Thursday, March 13, 2003 12:30 PM
> To: [EMAIL PROTECTED]
> Subject: Re: program to monitor directory changes (new files) and send
> e-mail
>
>
> Douglas, Stuart wrote:
> > Ah, important safety tip as that will be the case.
> >
> > Since I'm not comfortable implementing technology I don't fully
> > understand, would you be so kind as to translate into English each line
> > of your script? I think I get the basic drift of it..."take a snapshot
> > of the contents of a directory, take another and compare the two, if
> > their different send an e-mail, if their not, start all over again" or
> > something like that. Getting warm?
>
>
> That is exactly it. For the record, here is a commented version, as I
> would have written it if I were implementing it on my own server:
>
>
> #!/bin/sh
> #
> # Notify the admin if a directory's contents has changed.
> #
>
> # The directory to monitor.
> watchdir='/path/to/ftpdir'
>
> # Who gets notified of changes. This may be a
> # comma-delimited list, but no spaces.
> recipient='[EMAIL PROTECTED]'
>
> # The file that holds an md5sum of the directory
> # listing, as of the last time it was changed.
> sumfile='/path/to/sumfile'
>
> ## End of settings ##
>
> # Get the previous md5sum of the directory listing.
> olddirsum=`cat $sumfile`
>
> # Get the current md5sum of the directory listing. Use the
> # --full-time option to avoid errors based on ls changing the
> # displayed date format based on the age of the file.
> newdirsum=`ls --full-time $watchdir | md5sum`
>
> # Compare the previous md5sum to the current md5sum.
> if [ "$newdirsum" != "$olddirsum" ]; then
> # The directory listing changed.
> # Send notification message.
> ls $watchdir | mail -s "Updated dirlist: $watchdir" $recipient
>
> # Update the summmary file with the current md5sum.
> echo "$newdirsum" > "$sumfile"
> fi
>
Doug - Remove everything after the #Compare ... line in your script and
replace it with the following. You need the if...then block.
----------------
# Compare the previous md5sum to the current md5sum.
if [ "$newdirsum" != "$olddirsum" ]; then
# Get the process ID and scriptname and use them to
# generate a tempfile name. This method is not guaranteed
# unique, but it should be Good Enough.
pid=$$
scriptname=$(basename $0)
mailfile=/tmp/$scriptname.mailfile.$pid
# Check each file in $watchdir to see if it was created or changed
# since the last md5sum was generated.
for file in $(ls $watchdir); do
if [ $file -nt $sumfile ]; then
ls --full-time $file >> $mailfile
## Now mail a notification message to the recipients list
##
mail -s 'New voicemail message detected' $recipient < $mailfile
## then delete mailfile
rm $mailfile
fi
done
fi
# Finally, update the summary file with
# the current md5sum
echo "$newdirsum" > "$sumfile"
--
Jack Bowling
mailto: [EMAIL PROTECTED]
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