Vim

vim is a modal editor (improving on vi). It can run without graphics, is ubiquitous, powerful, and efficient but is an acquired skill. Vim’s design is based on the idea that a lot of programmer time is spent reading, navigating, and making small edits, as opposed to writing long streams of text. For this reason, Vim has multiple operating modes.

Normal: for moving around a file and making edits \ Insert: for inserting text \ Replace: for replacing text\ Visual (plain, line, or block): for selecting blocks of text\ Command-line: for running a command\

* MIT's “missing semester” has an excellent lecture video and notes. * vimtutor is a program included with vim that will guide you through usage – run it from the command line. * vim-wiki ===== Commands ===== Victoria's review: a minimal vim session experience: - vim $filename → opens a file in vim. If that file doesn't exist or you opened it in the wrong filepath, you will see an empty blank vim that says [NEW] at the bottom - i → puts you in i**nsert mode so you can freely type and move your cursor around. Says – INSERT – in bottom left.

1. esc → gets you out of insert mode

move around

1. 0 puts your cursor to the beginning of the line (in command mode)
2. $ puts your cursor to the end of the line (in command mode)
3. Shift + i puts your cursor to the beginning of the line and opens insert mode
4. Shift + a puts your cursor to the end of the line and opens insert mode
5. o opens insert mode on a new line below your cursor
6. up and down arrows move you up and down each line but to move between lines click g then up or down arrow
7. u undo last change (in command mode)

close vim temporarily

• Ctrl + z puts the vim window to “sleep” and brings you back to the terminal
• fg brings you from the terminal back into the last script in vim you were working on

exit

• :q → quits vim
• :wq → saves what you wrote and quits vim
• :q! → does not save what you wrote and quits vim