Scenario: I have a existing pi set up on my network. I regularly keep a spare cloned SD card ready - I have needed one before today! I am considering buying a second pi which I would like to be a copy of the existing one but will obviously need some changes to computer name, fixed ip and anything related to the MAC address that will be different.
My thoughts were to use the spare card to boot up, having first shut down the existing one to avoid any network conflicts. My question then is then to have a comprehensive list of the things I shall need to change so that it becomes an independent machine on the network. I use them headless by the way and control usually through a PuTTy shell, but can connect a screen easily enough for setup purposes.