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This question already has an answer here:

I have a computer with Arch linux. I want to know which desktop environment is installed.

My ultimate goal would be to install Gnome. Is it possible to have two desktop environments.

marked as duplicate by muru, Gilles, cuonglm, eyoung100, dhag Sep 17 '15 at 3:47

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  • Post a screenshot, if you can find a way to do that. – Tom Hunt Sep 16 '15 at 22:09
  • It's definitely possible to have multiple desktop environments installed. Even multiple DE running in separate GUI sessions at the same time. But only a single DE in a given GUI session. – Gilles Sep 16 '15 at 23:55
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You can try to print some env variable. At least gnome fill the X environment variable XDG_CURRENT_DESKTOP correctly:

$ echo $XDG_CURRENT_DESKTOP

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