In short, Having problem with emptying trash folder, I have followed the post "Cannot empty trash" by Lawrence. Here it is:

delete the contents of the .trash folder as superuser

#locate .trash

#cd /whatever/.trash
#sudo rm -rf *
#sudo rm -rf *.*
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My problem is that with deleting all files in the Trash folder the system also deleted all main Folders such as Documents, Downloads, Music, Pictures and so forth. Now I see only Desktop Folder in the window of the Files Manager. Trying to fix, I updated all packages with Muon Package Manager but the problem was not solved. Then, I tried to fix it with DPKG solution from boot menu but Lubuntu doesn't launch it on start. Can anyone help me bringing back Documents and others folders?

I've never had to use it, but Photorec may be able to help.

Read the documentation carefully.

The last time I did that, I created a new user, then cp -r the directories to the corrupted user's /home/
Made sure the ownership and permissions were correct for the old user, then removed the new user.

That didn't restore any documents, etc, tho. I had to recover those from off-site backups, but it was important to rebuild the directory structure quickly in my case.

I've since pretty much stopped using the -f option to rm. Yes, I have to acknowledge the deletion of each file, but that's less tedious than recovering lost data...I also backup more frequently (daily!) now

may this be a leesson why
a) people giving instructions on forums should be very clear about it, esp. when 'sudo rm' and such is involved
b) one should not copy-paste instructions into one's own terminal without knowing what they do, esp. when sudo is onvolved

1 members found this post helpful.

Thanks for replies. I am not sure that Photorec helps. I will try to restore my files from backup I have. But would you please to detail how I should to create a new user, ".... then cp -r the directories to the corrupted user's /home/. Made sure the ownership and permissions were correct for the old user, then removed the new user." Sorry for this inquiry for I am not advanced. Sergeyav

If you lost data, the very first thing you do is STOP USING THE DISK.
Then you boot some Live Rescue Linux (e.g. this one) and let extundelete and/or testdisk/photorec do their thing.
But please read the wiki first.