How to go back (ctrl+z) in vi/vim
You can use the u button to undo the last modification. (And Ctrl+R to redo it). Read more about it at: http://vim.wikia.com/wiki/Undo_and_Redo
You can use the u button to undo the last modification. (And Ctrl+R to redo it). Read more about it at: http://vim.wikia.com/wiki/Undo_and_Redo