R‎ > ‎

Emacs Commands

Basics
C-h b see ALL bound keys
C-x C-f "find" file i.e. open/create a file in buffer
C-x C-s save the file
C-x C-w write the text to an alternate name
C-x C-v find alternate file
C-x i insert file at cursor position
C-x b create/switch buffers
C-x C-b show buffer list
C-x k kill buffer
C-z suspend emacs
C-X C-c close down emacs
C-M-/ complete function or path

Basic movement
C-f forward char
C-b backward char
C-p previous line
C-n next line
M-f forward one word
M-b backward one word
C-a beginning of line
C-e end of line
C-v one page up
M-v scroll down one page
M-< beginning of text
M-> end of text
C-Shift-% -> find and replace
Find and replace in multiple files

Editing
M-n repeat the following command n times
C-u repeat the following command 4 times
C-u n repeat n times
C-d delete a char
M-d delete word
M-Del delete word backwards
C-k kill line
⌘-k copy line (custom function)
C-\ kill horizontal whitespace
C-Space Set beginning mark (for region marking for example)
C-W "kill" (delete) the marked region region
M-W copy the marked region
C-y "yank" (paste) the copied/killed region/line
M-y yank earlier text (cycle through kill buffer)
C-x C-x exchange cursor and mark

C-t transpose two chars
M-t transpose two words
C-x C-t transpose lines
M-u make letters uppercase in word from cursor position to end
M-c simply make first letter in word uppercase
M-l opposite to M-u

Online-Help
C-h c which command does this keystroke invoke
C-h k which command does this keystroke invoke and what does it do?
C-h l what were my last 100 typed keys
C-h w what key-combo does this command have?
C-h f what does this function do
C-h v what's this variable and what is it's value
C-h b show all keycommands for this buffer
C-h t start the emacs tutorial
C-h i start the info reader
C-h C-k start up info reader and go to a certain key-combo point
C-h F show the emacs FAQ
C-h p show infos about the Elisp package on this machine




Important
C-g quit the running/entered command
M-/ fill complete typing
C-x u undo previous action
M-x revert-buffer RETURN (insert like this) undo all changes since last save
M-x recover-file RETURN Recover text from an autosave-file
M-x recover-session RETURN if you edited several files
M-x r-mode RETURN to change the current file to R mode

Window Commands
C-x 2 split window vertically
C-x o change to other window
C-x 0 delete window
C-x 1 close all windows except the one the cursors in
C-x ^ enlarge window
M-x shrink-window command says it ;-)
M C-v scroll other window
C-x 4 f find file in other window
C-x 4 o change to other window
C-x 4 0 kill buffer and window
C-x 5 2 make new frame
C-x 5 f find file in other frame
C-x 5 o change to other frame
C-x 5 0 close this frame

Latex Commands
C-c C-e Insert Environment
C-c C-f C-e/b/i Emphasis/Bold/Italic
C-' Comment/Uncomment selection

Bookmark commands
C-x r m set a bookmark at current cursor pos
C-x r b jump to bookmark
M-x bookmark-rename says it
M-x bookmark-delete "
M-x bookmark-save "
C-x r l list bookmarks

mark bookmark for deletion
rename bookmark
save all listed bookmarks
show bookmark the cursor is over
mark bookmarks to be shown in multiple window
show marked bookmarks (or the one the cursor is over)
toggle listing of the corresponding paths
" path to this file
delete marked bookmarks
Del ?
quit bookmark list

M-x bookmark-write write all bookmarks in given file
M-x bookmark-load load bookmark from given file

Shell
M-x shell starts shell modus
C-c C-c same as C-c under unix (stop running job)
C-d delete char forward
C-c C-d Send EOF
C-c C-z suspend job (C-z under unix)
M-p show previous commands

DIRectory EDitor (dired)

C-x d start up dired
(large C) copy 
mark for erase
delete right away
e or f open file or directory
reread directory structure from file
change group permissions (chgrp)
delete line from listing on screen (don't actually delete)
mark with *
move to next line
open file in other window and go there
C-o open file in other window but don't change there
print file
quit dired
do query-replace in marked files
rename file
remove mark
view file content
delete files marked with D
compress file
M-Del remove all marks (whatever kind)
mark backup files (name~ files) for deletion
mark auto-save files (#name#) for deletion
*/ mark directory with * (C-u * removes that mark again)
compare this file with marked file
M-= compare this file with it's backup file
apply shell command to this file
M-} change to the next file marked with * od D
M-{ " previous "
% d mark files described through regular expression for deletion
% m " (with *)
create directory
changed to next dir
change to previous dir
toggle between sorting by name or date

Maybe into this category also fits this command:
M-x speedbar starts up a separate window with a directory view
Search/Replace
C-s Search forward
C-r search backward
C-g return to where search started (if you are still in search mode)
M-% query replace

Space or y replace this occurence
Del or n don't replace
only replace this and exit (replace)
replace and pause (resume with Space or y)
replace all following occurences
back to previous match
RETURN or q quit replace

Search/Replace with regular expressions
Characters to use in regular expressions:
beginning of line
end of line
single char
.* group or null of chars
\< beginning of a word
\> end of a word
[] every char inside the backets (for example [a-z] means every small letter)

M C-s RETURN search for regular expression forward
M C-r RETURN search for regular expression backward
M C-s incremental search
C-s repeat incremental search
M C-r incremental search backwards
C-r repeat backwards
M-x query-replace-regexp search and replace

Programming
M C-\ indent region between cursor and mark
M-m move to first (non-space) char in this line
M-^ attach this line to previous
M-; formatize and indent comment

Text
Works only in text mode 
M-s center line
M-S center paragraph
M-x center-region name says 

Macro-commands
C-x ( start macro definition
C-x ) end of macro definition
C-x e execute last definied macro
M-n C-x e execute last defined macro n times
M-x name-last-kbd-macro give name to macro (for saving)
M-x insert-keyboard-macro save named macro into file
M-x load-file load macro
M-x macroname execute macroname