I've seen a few tips on different sites explaining how to run two
copies of certain applications. Most of these involve creating a
second copy of the Application bundle, which can be impractical if it
contains too many resources, and is a hassle in any case.
Here's an easier way that I don't think anyone has posted here: Just
run the application that you'd like to launch a second time from
Terminal, using the open command with the --new (-n) flag. This will
force an additional instance to be opened regardless of how many are
already running. For example, if I wanted to run another copy of Mail,
I'd do it this way:
open -n /Applications/Mail.app
Remember that you can drag an icon to the Terminal window and it will
insert its path, making this even simpler!
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