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PSA: Remember to also check hidden directories you don't even know about for waste of space
(feddit.org)
Apparently, Prism Launcher chose to adhere to the idiotic principle of the hidden "trashbin", .Trash-$(uid), invented by Ubuntu. Even though it's based on QT. This can't be disabled. It accumulated 139 GB of literal Trash, fully replaceable, over time. Just ... why? There's even an open issue about this, for over a year, referenced multiple times. I guess I have another point on my agenda.
I use command
trash-emptyto empty all trashcan of all the users, after each system update. It's a non standard program, but most likely available in your distributions repository: https://github.com/andreafrancia/trash-cli And my alias/function will show each file that is about being deleted (just put it in .bashrc, if you have installedtrash-cli, which includestrash-empty):old function (click to expand)
Edit: After I posted I just realized there is a more straightforward way of doing it:
New and more simple alias:
This searches all trash cans, lists all files it has found to be deleted, then lists all directories it looked under and then asks if you want really delete. With
trash-empty -fit deletes without asking.