To enter GNU Emacs 19, just type its name:

  emacs

 suspend Emacs (or iconify it under X)

 C-z

 exit Emacs permanently

 C-x C-c

 read a file into Emacs

 C-x C-f

 save a file back to disk

 C-x C-s

 save all files

 C-x s

 insert contents of another file into this buffer

 C-x i

 replace this file with the file you really want

 C-x C-v

write buffer to a specified file

 C-x C-w

 remove Help window

 C-x 1

 scroll Help window

ESC C-v

 apropos: show commands matching a string

 C-h a

show the function a key runs  

C-h c 

describe a function 

C-h f 

get mode-specific information 

C-h m 

abort partially typed or executing command  

 C-g

recover a file lost by a system crash 

M-x recover-file 

undo an unwanted change 

C-x u or C-` 

restore a buffer to its original contents  

M-x revert-buffer 

redraw garbaged screen 

C-l 

 search forward

C-s 

search backward 

C-r 

 regular expression search

C-M-s 

reverse regular expression search 

C-M-r 

select previous search string 

 M-p

select next later search string  

M-n 

exit incremental search 

RET

undo effect of last character 

DEL

abort current search 

 C-g

entity to move over

backward 

 forward

character

C-b

 C-f

word

M-b

M-f

line

C-p

C-n

go to line beginning (or end)

 C-a

C-e

sentence

 M-a

M-e

paragraph

M--

 M-"

page

C-x [

C-x ]

sexp

C-M-b

C-M-f

function

C-M-a

C-M-e

 go to buffer beginning (or end)

 M-< M->

 scroll to next screen

 C-v

 scroll to previous screen

 M-v

 scroll left

C-x <

 scroll right

 C-x >

 scroll current line to center of screen

 C-u C-l

 entity to kill

 backward

 forward

 character (delete, not kill)

DEL 

C-d 

word  

M-DEL 

M-d 

line (to end of) 

M-0 C-k 

C-k 

sentence  

 C-x DEL

M-k

sexp 

 M-- C-M-k

 C-M-k

kill region  

C-w

 copy region to kill ring

M-w 

 kill through next occurrence of char

M-z char 

yank back last thing killed 

C-y 

replace last yank with previous kill  

M-y 

 set mark here

C-@ or C-SPC 

exchange point and mark 

 C-x C-x

set mark arg words away 

M-@

mark paragraph  

 M-h

 mark page

 C-x C-p

mark sexp 

 C-M-@

 mark function

 C-M-h

 mark entire buffer

C-x h

interactively replace a text string 

  M-%

using regular expressions 

 M-x query-replace-regexp

 replace this one, go on to next

 SPC

 replace this one, don't move

 ,

 skip to next without replacing

DEL

 replace all remaining matches

!

 back up to the previous match

 ^

 exit query-replace

 ESC

 enter recursive edit (C-M-c to exit)

 C-r

delete all other windows 

C-x 1

delete this window 

C-x 0

split window in two vertically 

C-x 2 

split window in two horizontally 

C-x 3

scroll other window 

C-M-v 

 switch cursor to another window

C-x o

shrink window shorter 

 M-x shrink-window

grow window taller 

C-x ^

shrink window narrower 

C-x -

grow window wider  

C-x "

select buffer in other window 

 C-x 4 b

display buffer in other window 

C-x 4 C-o 

find file in other window 

C-x 4 f 

find file read-only in other window 

C-x 4 r 

run Dired in other window 

C-x 4 d 

find tag in other window 

 C-x 4.

indent current line (mode-dependent) 

TAB 

indent region (mode-dependent)

C-M-" 

indent sexp (mode-dependent) 

C-M-q 

indent region rigidly arg columns 

 C-x TAB

insert newline after point  

C-o 

move rest of line vertically down 

C-M-o 

delete blank lines around point 

C-x C-o 

join line with previous (with arg, next) 

 M-^

 delete all white space around point

M-"

put exactly one space at point 

M-SPC 

fill paragraph 

M-q 

set fill column 

C-x f 

set prefix each line starts with 

 C-x .

 uppercase word

 M-u

 lowercase word

 M-l

 capitalize word

 M-c

 uppercase region

 C-x C-u

 lowercase region

 C-x C-l

 capitalize region

 M-x capitalize-region

complete as much as possible 

 TAB

complete up to one word 

SPC

complete and execute 

RET

show possible completions 

? 

fetch previous minibuffer input 

 M-p

fetch next later minibuffer input 

M-n

regexp search backward through history 

 M-r

 regexp search forward through history

M-s

 abort command

 C-g

previous minibuffer command  

M-p 

next minibuffer command  

M-n 

select another buffer 

C-x b 

 list all buffers

C-x C-b 

kill a buffer 

 C-x k

transpose characters 

C-t 

transpose words 

M-t 

transpose lines 

 C-x C-t

 transpose sexps

 C-M-t

check spelling of current word 

M-$ 

check spelling of all words in region 

M-x ispell-region 

check spelling of entire buffer

M-x ispell-buffer

find a tag (a definition) 

M-. 

find next occurrence of tag  

C-u M-. 

specify a new tags file 

 M-x visit-tags-table

regexp search on all files in tags table

M-x tags-search 

 run query-replace on all the files

M-x tags-query-replace 

continue last tags search or query-replace 

M-, 

 execute a shell command

 M-!

 run a shell command on the region

 M-_

 filter region through a shell command

 C-u M-_

 start a shell in window *shell*

 M-x shell

copy rectangle to register 

C-x r r 

kill rectangle 

C-x r k 

yank rectangle 

C-x r y 

open rectangle, shifting text right 

 C-x r o

blank out rectangle 

M-x clear-rectangle 

prefix each line with a string 

M-x string-rectangle 

add global abbrev 

C-x a g 

add mode-local abbrev 

 C-x a l

add global expansion for this abbrev 

C-x a i g 

add mode-local expansion for this abbrev  

C-x a i l 

explicitly expand abbrev  

C-x a e 

expand previous word dynamically 

M-/

 any single character except a newline

.(dot)

 zero or more repeats

 *

 one or more repeats

 +

zero or one repeat

 ?

 any character in the set

 [ : : :]

 any character not in the set

 [^ : : :]

 beginning of line

  ^

 end of line

 $

 quote a special character c

 "c

 alternative ("or")

 "_

 grouping

 "( : : :")

 nth group

 "n

beginning of buffer

 "`

 end of buffer

 "'

 word break

 "b

 not beginning or end of word

 "B

 beginning of word

 "<

 end of word

 ">

 any word-syntax character

 "w

 any non-word-syntax character

 "W

 character with syntax c

 "sc

 character with syntax not c

 "Sc

save region in register 

 C-x r s

insert register contents into buffer 

C-x r i

save value of point in register 

C-x r SPC 

jump to point saved in register  

 C-x r j

enter the Info documentation reader  

C-h i 

scroll forward 

 SPC

scroll reverse 

 DEL

 beginning of node

 .(dot)

next node 

 n

 previous node

p

 move up

 u

select menu item by name 

 m

select nth menu item by number 

(1-5)n 

follow cross reference (return with l) 

 f

return to last node you saw 

 l

return to directory node 

 d

go to any node by name 

g

run Info tutorial 

h 

list Info commands  

? 

quit Info 

q

 search nodes for regexp

s 

start defining a keyboard macro 

C-x ( 

end keyboard macro definition  

 C-x )

execute last-defined keyboard macro 

C-x e 

append to last keyboard macro 

C-u C-x ( 

name last keyboard macro 

M-x name-last-kbd-macro 

insert Lisp definition in buffer 

M-x insert-kbd-macro

eval sexp before point 

C-x C-e 

 eval current defun

C-M-x 

eval region 

 M-x eval-region

 eval entire buffer

 M-x eval-current-buffer

read and eval minibuffer 

M-ESC 

re-execute last minibuffer command 

C-x ESC ESC 

 read and eval Emacs Lisp file

M-x load-file 

load from standard system directory 

M-x load-library