4K3YM4L/WizNet ? reverse-engineered prompt

Build me a simple bash tool that helps me look up information about an IP address from the terminal.

I want it to be easy to use, with a clean menu so I can either use my local IP or type in another IP address. It should also let me pick an IP from a text file, and make it easy to change that saved IP whenever I want so I do not have to keep retyping it.

Please keep it straightforward and friendly for someone who is not very technical. The script should run from the command line with something like bash or ./, and it should clearly show the IP details it finds. If you need to check current documentation or examples online, go ahead and do that.