This trick will allow us to recover a project deleted by mistake in Business application studio but to save you troubles better use a git repository 

To do so, we follow these simple steps:

• Open a new terminal:

• Let’s go to the next folder:

/home/user/.local/share/Trash/files

In this folder we will see different folders that group the deleted files,we can obtain the list of files ordered by date using the following command:

ls -lt

We will see that our files are there:

To recover the files we can use the following command which will generate a Recovered folder:

mv ./185203f8-4a0f-4aa3-89da-711c726f1f62 /home/user/projects/Recovered

I hope you find it useful.