Based on something I read here, I created the following script back when I was on Tiger:

#!/bin/bash
RANGE=35
echo
number=$RANDOM
let "number %= $RANGE"
cp /Users/Shared/backgrounds/$number.jpg /Library/LoginWindow/Aqua_Blue.jpg

And changed the default login background image to the one mentioned on the last line (/Library/LoginWindow/Aqua_Blue.jpg), and set the script to be run on every logout (logout hook). That way, I have a total of 36 (0.jpg to 35.jpg) images that change every time I log out of an account, shut down, restart, … Less noticeable than an Applescript script or app.

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Thanks!
sorry but I'm even more ignorant about shell scripts than apple scripts.
How do I create a logout hook to a shell script? Also, do you know if I can make your script run every time I go to the login window and not just on logouts (say if I use the users menu)?

[ Reply to This | # ]

Hi, sorry for not replying earlier.

Unfortunately, I'm really a beginner in those matters too, so I don't remember. I did it a few months ago after some research, but now it's all behind me.
Try searching "logout hooks" on Google, it might turn up some useful results.

Good luck…

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