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I installed mathematica on Linux mint cinnamon latest edition and it works, but with one annoying issue: when there is a notebook open and I click on another notebook in the file manager, a whole new instance of the mathematica application launches (with a new startpage that needs to be closed separately at the end). How can I launch the new notebook from the file manager in the already running app? Is it not a problem to have two instances of mathematica running? I think it affects the performance or the interface is laggier if there are two.

duality
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  • Use hotkeys, Ctrl-N or Ctrl-O or menu. It might be a problem to run several copies of WM if the number of kernels in your license is limited. Note, having separate copies allows to run tasks simultaneously which might be desired. – I.M. May 10 '21 at 12:27
  • @I.M. Have been doing that for the moment. Ran into the kernel issue too. But yeah I see the reason why someone would want to launch every notebook in a different instance. However is there a way to change settings so that it doesn't happen, and when I click on a nb file it opens in the already running mathematica? – duality May 10 '21 at 13:05
  • You may want to modify the .desktop file for your Mathematica shortcut to add -sl to the command flags (the Exec key in that file), although I don't know for sure that the .desktop file handles double-clicking of related files. – Carl Lange May 10 '21 at 13:06
  • @ Szabolcs yeah it does, thank you. @CarlLange trying this now, but where to find these config files? Anyway -sl is the flag I needed. – duality May 10 '21 at 13:08
  • Usually in /usr/share/applications/ or /usr/local/share/applications/. Depending on what you have installed, it might be called wolfram-mathematica12.desktop or similar. You might need to restart your X session (like, by logging in and out) to apply the changes. (Top tip, you can also add -nosplash to prevent the splash screen showing, if you want) – Carl Lange May 10 '21 at 13:20

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