although being more complicated, the latter is something I trust way more.
I mean, how can you be sure all the systems you want to affect are up and running and connectable? that is main caveat of remotely running admin script at an arbitrary time.

I think Jens was the one who even made the kixtart version of system management server "thingie"
can't remember the name of the beast but it was way back and if I don't remember wrong, HUUUUGE. :p
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