====== Simple vi/vim handling ======

===== Line numbers =====


Show line numbers:
  :set nu

"Unshow" line numbers:
  :set nonu

===== Vim show line numbers with F12 shortcut =====

Add show/unshow line numbering in vim (F12 key)
Add following to /etc/vimrc
  
  nmap <F12> :set number!<CR>


===== Search and replace =====

Current line = .

Insert comment character on current and next 5 lines:
  :.,+5s/^/#/g

Change all appearances of from to morf from line 1 to current line:
  :1,.s/from/morf/g 

===== VIM - Comment blocks of code (visual mode) =====

Mark the area which is to be commented using the *blockwise* visual mode (CTRL-V)\\
Press I (capital i) and write the text you want to prepend to each line of the selected block, e.g. %.\\
Then press ESC and the text will be inserted to the left of each line of the selected block.

===== VIM - Select line(s) (visual mode) =====

Shift + v