You can also use Mach APIs if you have root access. I don't
remember many of the details here. I believe Activity Monitor
works this way; it launches a tool with the "run with root privs"
bit set.
If going that far, probably launching ps and parsing its output
would prove easier. Unless you need something which ps could not
offer, and that's not too probable.
Yeah, that's a good option #5 that I didn't list.
AFAIK none of these solutions work quite right if you move or
rename the app after it has been launched. You will get back the
path that it was originally launched from. This is a sad downgrade
from OS 9 but I guess it is a hard problem to solve.
It's not downgrade, it's upgrade--since it effectively means you
can do whatever you want with the program file (even deleting it)
without breaking the proces which was launched upon it. That's more
flexibility, and thence definitely a good thing.
You can do anything you want, except find the darn thing on the hard
disk. Yes, some of us actually want the current path to the running
app, even if it might move again in the future. In OS 9 you could
move or rename apps just fine while they were running and still find
them. (You couldn't delete them, but I think that was by design—let's
face it, how many of us are writing apps which will keep on running
if the whole bundle suddenly got rm -rf'ed? This is just a basic way
of protecting the user.)
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