how to get out of nano in redhat
 

how to use nano in red hat to edit and how to exit also like to know about other editor in linux

Nano is super easy! It's the editor you use when you can't use a real one! There's a hotkey menu along the bottom.

Ctrl + X

vi is more common, harder, but much much better in the long term if you can put the effort in. there are many useful cheat sheets out there you can google for to get going.