I’m just about to install a crontab entry, and boom - I end up in the weird default editor. The one I never quite understood.

ESC? Nothing happens.

CTRL + C? No.

ESC ESC ESC? Nope. I’m stuck.

Not again. With my head down in shame, I’m resorting to opening another session just to killall vim to get on with my day.

Sound familiar? I don’t know about you, but I’ve been there. Until I decided to spend 10 minutes learning the very basics of Vim.

This post is your survival guide to the editor Vim. It’s not advanced, but enough to get you started and hopefully spark your interest in learning more.

Vim is shipped by default with many operating systems (including most Linux distributions and Mac OS X), so I suggest you take a proactive approach to learning it. Just launch a terminal and type ‘vim’ to get started.

With some learning, Vim can be more powerful than many graphical IDEs. And it certainly doesn’t eat hundreds of megs of memory just to view an empty file (looking at you, Eclipse).

The Basics

Some commands in this guide start with a colon: pressing it will display the command prompt where the subsequent command is written.

Commands without a colon are more like hotkeys - they can be used in the Vim default mode (which is the mode Vim starts in).

Commands written in CAPITAL LETTERS are specific keys: for example, ESC means the escape key on your keyboard.

All commands in Vim are case-sensitive.

Exiting Vim

To quit, discarding any changes you might have made:

:q!

Memorize: quit dammit!

To quit, saving any changes you’ve made:

:wq

Memorize: write to disk and quit

To move around the currently open file, use your arrow keys.

To move to line 285:

:285

To search for the word import:

/import

Editing text

To start inserting text on the current cursor location:

i

Memorize: insert

To start inserting at the end of the current line:

A

Memorize: Append

To exit insert mode, and return to the default mode:

ESC

Selecting text

To start selecting, enter the visual mode:

v

Memorize: visual

Select text by moving with your arrow keys.

To exit visual mode:

ESC

Cut, copy and paste

To copy the current selection into the buffer (think of it as a clipboard):

y

Memorize: yank

To cut the current selection:

d

Memorize: delete

To copy the current line into the buffer:

yy

Memorize: yank yank

To copy 3 lines including the current line into the buffer:

3yy

To cut the current line and place it into the buffer:

dd

Memorize: delete delete

To cut 5 lines including the current line:

5dd

To paste the buffer before the current line:

P

Note: Uppercase P

To paste the buffer after the current line:

p

Undo and redo

To undo the last change:

u

Memorize: uh-oh :)

To redo the last change you just undid:

CTRL + R

To see the number of changes:

:undolist

To undo the last two changes:

2u

The Vim multi-level undo tree is very powerful. Read more about it here.

Opening files

To open the file index.html instead of the current one:

:edit index.html

Saving files

To save the file you’re currently editing:

:w

Memorize: write to disk

To save the file with a different name, here changes.txt (ie. Save As):

:w changes.txt

Searching and replacing

To search and replace all occurences of a string in the file:

:%s/typo/corrected/g

To search and replace, but prompt before replacing:

:%s/typo/corrected/gc

Memorize: confirm

Syntax highlighting and Indentation

Turn on syntax highlighting:

:syntax on

Enable automatic indentation:

:set autoindent

Increase indentation on multiple lines by selecting them in visual mode, and pressing:

>

Working with multiple files

Tabs

To open server.py in a new tab:

:tabe server.py

Memorize: tab edit

To move to the next tab on the right:

:tabn

Memorize: tab next

To move to the previous tab on the left:

:tabp

Memorize: tab previous

To close a tab, move to it and use :q or :wq as you would normally.

Split view

To open templates/base.html in a vertical split screen:

:vs templates/base.html

Memorize: vertical split

To open shared.js in a horizontal split screen:

:sp shared.js

Memorize: the ‘default’ horizontal split

To move between split screens:

CTRL + W + ARROW KEYS

To close a split screen, move to it and use :q or :wq as you would normally.

Configuring Vim: the .vimrc

Many of the commands you use to change how Vim looks and behaves can be made default by placing them in the .vimrc. This is the Vim configuration file, and it lives in your home directory.

For example, placing this in ~/.vimrc will enable syntax highlighting and autoindentation by default:

syntax on
set autoindent

Get some ideas for creating your dream .vimrc here.

More resources for life with Vim

Did I spark your interest? Great!

Here are some resources for you to continue learning:

Releaseworks Academy has a free online training course on Docker & Jenkins best practices: https://www.releaseworksacademy.com/courses/best-practices-docker-jenkins