vi <file>

• Movement:

  h - Left

  j - Down

  k - Up

  l - Right

  :n - go to line

  :$ - Go to the end of file

• Making Changes

  i - Insert here

  I - Insert at the beginning of line

  a - Append here

  A - Append from the beginning

  x - delete

  dw - delete word

  dd - delete line

  D - delete from here on

  r - replace char

  cw - replace word

  cc - replace current line

  C / c$ - replace from here on

  ~ - swap upper/lower casing

  yy - copy current line

  p - paste

  u - undo

  <Ctrl>-R - redo

• Searching

  /<pattern> - Forward search

  ?<pattern> - Reverse search

  n - next item

  N - previous item

• Repeating Actions

  <n><action><insert> - Repeat Action (insert opt) n times

  ex: Write A 45 times == 45iA<esc>

• Saving & Breaking Out:

  <esc> - exit current mode

  :w - write

  :q! - Leave & don't save a thing!

  :wq! - Write & Run!