Configure VIM to Show Line Number
Use :set number command within the editor to see the line numbers in the vim editor. This should work as a temporary solution.
For vim to show the line number permanently it has to be configured from .vimrc so that it show the line number in the editor.
One need to edit the .vimrc file to add set number.
.vimrc
set number.vimrc file is usually located in the home directory. To go to home directory use command cd ~. So, the vimrc file directory would be cd ~/.vimrc.