Vim
Modes
i goes into insert mode
Esc goes back to command mode.
Commands
Saving and Exiting vim
ZZ Save and exit vim
:w Write the file to disk, stay in vim
:w !sudo tee % Saves the file, even you don't have permission to write to the file (do this instead of closing the file, opening with sudo, and re-doing your changes)
:wq Save the file and exit vim
:q</code Quit vim (Note: if you've made changes, you'll get a message that the file has changed. To quit without saving changes, use: :q! )
/string search forward for string
?string search backword for string
CTRL + f scroll forward one screen
CTRL + b scroll backword one screen
% go to the "mate", if one exists, of the parenthesis, brace, or bracket.
Manipulating Text
u undo the latest change
:earlier 15m reverts the document to how it was 15 minutes ago. You can substitute any valid time instead of 15m.