Solve the problem of using the arrow keys and the BACKSPACE key in the edit mode of the VI command in Ubuntu

In Ubuntu, the VI command to enter the editing mode, found that the arrow keys can not move the cursor, but will output ABCD, and the BACKSPACE key can not normally delete characters. This is because Ubuntu is pre-installed with Vim-tiny, and we need to use vim-full, the solution is simple, only need the following two steps:
　　
Step one, enter the following command to uninstall Vim-tiny:

sudo apt-get remove Vim-common

Step two, enter the following command to install the Vim-full:

sudo apt-get install vim

Now in the VI command editing mode can normally use the arrow keys and BACKSPACE.