Note: Work-In-Progress - I will be updating this as I learn my way around vi. I'll add new entries as and when I find that I'm using them frequently
:e . - edit file, show list to choose from
:e filename - edit a specific file
:q! - quit without saving
:x - save and exit
:w - save and continue editing
:buffers - list buffers
:b N - switch to buffer N
C-^ or
C-6 - switch to last buffer
:bn[ext][!] - switch to next buffer
:bp[revious][!] - switch to previous buffer
Useful mapping for :bn and :bp:
:nnoremap <C-n> :bnext<CR>
:nnoremap <C-p> :bprevious<CR>
:[N]bd[elete][!] - delete buffer [(current) | N]
:[N]bun[load][!] - unload buffer [(current) | N]
:[N]bw[ipeout][!] - wipeout buffer [(current) | N]
(2 backticks) - jump to last edit position
'' - (2 single quotes) jump to last edit position ^
w - jump to start of next word
b - jump to start of previous word
0 - jump to start of line
^ - jump to first non-blank char of line
$ - jump to end of current line
gg - jump to start of first line
G - jump to start of last line
) - jump forward one sentence
( - jump backward one sentence
} - jump forward one paragraph
{ - jump backward one paragraph
das - delete around a sentence
:noh - turn off highlights until next search
:set tw=N - hard text wrap at column N
:set tw=0 - turn text wrap off
gqq - wraps the current line (inserts hard break)
gqip - wraps the current paragraph (inserts hard breaks)
(From vim.wikia) Wrap text visually but only insert linebreak when ENTER is pressed
:set wrap
:set linebreak
:set nolist " list disables linebreak
C-] - jump to |topic| at cursor
:q - exit from help