I feel I should point out that, even without an interface, you could
expose security vulnerabilities. For instance, if you use the echo
<password>|sudo -S method, it usually displays the password that was
echoed when you look at the processes, say via ps. This is sort of a bad
thing, since any application or person could, conceptually, run ps and
immediately have the user's password. So, the concern isn't about what
can be done to your application, but rather what can be done to the
system because of the application.
You can't, so far as I know, really cause a script to logout then back
in as a different user. You could have cron use different versions of
the script that just run as different users, or you can call su -
<username> from the script, though that would entail using interactive
passwords, since I don't think su will read passwords from stdin.
As for Wake on LAN, you might look at the tools listed here:
https://webserver.brandeis.edu/pages/view/Bio/MacOSXWakeOnLAN
One of them may lead you to a way to form a proper WOL packet, otherwise
you could try tracking down the network standard for it, should one exist.
Good luck,
Fargo
Craig Hoyt wrote:
Thanks Sam, Kem, and Fargo,
I'll give this a wack. I tried to find the answer myself so I might
have got myself screwed up some with the 'using administrators
permissions' thing - I think this is an AppleScript thing and not
Shell script.
As for security... this is not an issue. My little slave programs have
no interface so it can not be tampered with. It's only function is
listen on a particular port for specific UDP commands. Commands can
only be sent from the master program which am in control of. I'm the
administrator of a 24 Mac Lab. This is just to streamline my job. I
already can do some real cool stuff... Shut Down & Restart is a given,
but I can do a Repair Disk Permissions, move all desktop items to the
trash, empty the trash, close all Finder windows, run/quit
applications, open a specified browser to a specified URL, sleep,
wake, open/ close CD/DVD drawers, and a bunch more. I can select a
singe Mac or send to all (it's real funny sending an open and close
drawer commands to all - except for our newer Mac the drawers open and
close in unison - kind of like the scene from No Time For Sergeants
except computers and not toilets). I'm still working on a way to
logout from one account and into another using a Shell Script and
implementing a 'Wake On Lan'.
Have an Egg Nog on me... Actually have mine I hate the stuff!
Craig
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