Restart KDE Plasma

# For KDE > 5.10
kquitapp5 plasmashell || killall plasmashell && kstart5 plasmashell

Remarks:

  1. If you are not sure which KDE version your run, kinfocenter –version will tell you.
  2. you can skip the kquitapp5 plasmashell || part if you don’t want to be stuck in the timeout when plasmashell is not responding.

Original Source: kwin - Can I restart the KDE Plasma Desktop without logging out? - Ask Ubuntu

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