How to make every account in the system login automatically?

Question

How to make every account in the system login automatically when Mac OS X startup?
Thanks!

Answer 1

I can see one way to do it. You'll need to install a script in each user account, and have it set as a login item for each user. Let's imagine you have three user accounts. Each user in Mac OS X has a UID number. Normally your first user has the UID of 501, the second one will be 502 and so on...
You can determine the UID by running the following AppleScript while logged in on each user:
do shell script ("ID")
This'll return a long block of text, but right at the start you'll see the UID number. Let's assume your three users have the UIDs 501, 502 and 503. We begin with 501.
Create the following script and save it as an application while logged in as 501. Note that the password you're entering is the password for UID 502. Also note that the forum system is creating line breaks where there shouldn't be any. The long "do shell script" line should be one line.
delay 5 --This delay allows time for login to complete, but it may not be necessary.
try
do shell script "/System/Library/CoreServices/Menu\\ Extras/User.menu/Contents/Resources/CGSession -switchToUserID 502"
delay 5 --This delay could be shorter or longer, depending on how fast your machine is.
tell application "System Events"
keystroke "password for 502" --the password for UID 502
keystroke return
delay 1
end tell
on error
display dialog "Unable to switch user."
end try
Open System Preferences, go to Accounts, click "login items" and drag your script (saved as an application) to the login items window.
You basically repeat this process for each user account, modifying the script so it switches to the next user.
This isn't ideal, because your passwords will be stored in the scripts, and each user could open the scripts and learn the passwords of the other users on that machine.
I picked some of this up from a discussion over at the Macworld forums:
http://hints.macworld.com/article.php?story=20031102031045417
Message was edited by: The Preacher
Message was edited by: The Preacher
Message was edited by: The Preacher