Emacs Cheat Sheat

Table of Contents

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1 Emacs

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  • C- means hold down the Control key - Ctrl on a keyboard
  • M- means hold down the Meta key - often Alt or Esc on a keyboard
  • C-g can be used to quit a command you accidently started

File handling

  • Open or create (if it doesn't exits) a file
    • File (once opened) are loaded into a buffer, so we'll talk about buffers from here on in. 
C-x C-f
  • Kill a buffer 
C-x k
  • Switch to another open buffer 
C-x b
#Note this gives you the option of entering any open buffer.
#Hitting return will open the last previous buffer you had open
#Alternatively you can type the name of a buffer (Tab for autocompletion remember)
  • Quit emacs 
C-x C-x

Navigation

You can use the cursor keys to navigate forwards, backwards, up and down if you like. Emacs geeks will frown upon it and shout at you about the home-row, but it's up to you really.

  • Move forward and backward one character 
C-f
C-b
  • Move to the next or previous line 
C-n
C-p
  • Move to the beginning and end of a line 
C-a
C-e
  • Move forward and backwards one word 
M-f
M-b
  • Move up and down the page 
C-v
M-v
  • Go to a specific line 
M-g g
## Only useful if you can see line numbers though
M-x linum-mode
  • Go to beginning and end of buffer 
M-<
M->
  • Go to a specific word 
#For a word after your cursor
C-s 
#For a word before your cursor
C-r

Kill and Yank

  • Set a mark for beginning of selection 
C-spc
  • Kill a line 
C-k
  • Kill a selected region and place in kill ring 
C-w
  • Copy a selected region into kill ring 
M-w
  • Yank from the kill ring 
C-y

UI Stuff

  • Split window vertically 
C-x 3
  • Split window horizontally 
C-x 2
  • Delete current window 
C-x 0
  • Make current window the only window 
C-x 1
  • Switch between windows 
C-x o

Python Stuff

  • Setup to use Python3 over Python2
    • You need to edit (or create) a .emacs file in your home directory
    • Add this line 
    (setq python-shell-interpreter "python3")
    • When you restart emacs you'll be using Python3
  • Open an interpreter in another window 
C-c C-p
  • Execute the current Python Script 
C-c C-c