I am not able to access any folder or file from the main directory (which is my run directory). When I try to paste any file/folder into my run directory, I get the error which states, "Permission denied <Folder name>". Here I tried to paste a folder named kepsilon into the run folder and then tried to access it, but the error occurred.
Screenshot for the same is attached.
You can use the following command to enter superuser mode, before trying the cd command.