emacs

• Prior to starting this demonstration, you should set up your unix directory according to the instructions in Unix utilities

• emacs is a powerful text editor with extensive functionality.

1) Control mode is activated by pressing and holding the <ctrl> key while pressing the second key. This process is written as:

C-key

This example shows the result after C-s (search):

2) Meta-mode is activated by pressing and releasing the <ESC> key followed by some other key that activates a sub-menu of commands. This process is written as:

ESC option

This example is what appears after entering ESC x (activate execute-extended-command menu)

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• check to see that you are in the IAP_2010 directory unix by entering the command:

pwd

• the result should be (where USERNAME is your own unix username)

/home/USERNAME/IAP_2010/unix

• If it is not, you can change to that directory by executing:

cd /home/USERNAME/IAP_2010/unix

• create a copy of the file replace.txt with:

cp replace.txt replace2.txt

• Begin editing replace2.txt with:

emacs replace2.txt

• Note, on new accounts a splash screen welcomes you to emacs use C-l to exit the screen and proceed to editing.

• Insert text by regular typing.

• Delete letters with C-d

• Delete lines with C-k

• Find and replace text with ESC x , then type replace-string on M-x line. enter search string, then return, then replacement text.

• Move to the end of the document with ESC >

• Move back to the start of the document with ESC <

• Play tetris with ESC x, tetris

• Save and exit with C-x followed by C-c then answer prompts if changes were made.

• To turn off the splash welcome screen, edit a file called .emacs to have the contents:

(setq inhibit-splash-screen t)