Introduction to Emacs

1
Introduction to Emacs

• (the Unix, Linux, and Windows text editor)

2
Intro to Emacs

• Emacs is a powerful, programmable text editor.
• It is available for Linux, Unix, and Windows.
• To run Emacs, simple type
• emacs
• emacs test.cpp

3
Emacs acronyms

• Eighty Megabytes And Constantly Swapping
• Eventually Mallocs All Computer Storage
• Esc Meta Alt Ctrl Shift
• Exceptionally Mediocre Algorithm for Computer
  Scientists
• Emacs Makers Are Crazy Sickos
• Emacs Makes A Computer Slow

4
Intro to Emacs

• Emacs is normally in insert mode.
• Emacs also has a command mode.
• All commands begin with either
• C (the Ctrl key)
• Hold down the Ctrl key while pressing the listed
  key.
• M (meta either Esc or Alt)
• Hold down the Alt key while pressing the listed
  key.
• Or press and release the Esc key and then press
  the listed key.

5
Emacs commands

• C-x C-c Quit Emacs (without saving).
• C-x C-s Exit Emacs (saving any changes).
• C-x u Undo.
• C-s Search.
• C-g Quit current command.
• C-k Kill from the cursor position to end
• of line.
• C-y Yank back (what was killed).

6
Emacs command

• C-v move forward one screenful
• M-v move backward one screenful
• C-p move to previous line
• C-n move to next line
• C-b move backward a character
• C-f move forward a character
• C-a move to beginning of line
• C-e move to end of line
• M-lt go to beginning of file
• M-gt go to end of file

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Emacs command

• copy-paste steps
• move to beginning of block
• C-space or C-_at_ set mark
• move to end of block
• M-w copy
• move to where you wish to insert
• C-y yank/paste

8
Emacs command

• cut-paste steps
• move to beginning of block
• C-space or C-_at_ set mark
• move to end of block
• C-w delete/cut
• move to where you wish to insert
• C-y yank/paste

9
Remember

• C-x C-c Quit Emacs (without saving).
• C-x C-s Exit Emacs (saving any changes).
• C-x u Undo.
• C-g Quit current command.