Determine wheteher your cursor is on line 6 in the current buffer.
Run the command :AmIOnLineSix anywhere in the buffer. If your cursor is on
line 6, it will display "Yes". If it is not on line 6, it will display "No".
If you don't have a preferred installation method, I recommend installing pathogen.vim, and then simply copy and paste:
cd ~/.vim/bundle
git clone https://github.com/tommcdo/vim-line6.git
Once help tags have been generated, you can view the manual with
:help line6.
This plugin is a lot of work and can't be taken on by just one developer, so contributions are welcome. All pull requests will be merged without question.