You can give them exercises and tire them out during the day, but remember that cats are considered nocturnal and trying to interfere with their normal behaviour may not be the best thing.
I think line 4 is just to give the batch file a title. To change the folder name from "Private" to something else, you need to replace the word "Private"...
Be aware that cats do feel stressed when overcrowded. Be realistic about how much space there is in the home, and don't add another cat if it means living on...
This depends a lot on the cat's personality. Some previously outdoor cats actually prefer to be indoor cats as they feel more secure. The trick is to provide ample opportunity...
A truly feral cat is unlikely to adapt well to an indoor life. A feral cat is uncomfortable with human company and may well feel trapped and be very unhappy....