UNIX and EMACS for 61A (snarfed[1] from Todd Segal et al)

Emacs

Emacs is the official text editor of 61A, as well as the editor you will use in most CS classes at Berkeley. In addition to the online help facilities of Emacs, a basic reference is included in the reader. Take some time to play with Emacs; the better you know Emacs, the less time you will spend on your homeworks, projects and labs fumbling around trying to open, close and edit files. Some important Emacs commands (most of them also are available form the drop-down menus):

Operation	Keyboard Shortcut
Open a file	Control-x Control-f
Save the current buffer	Control-x Control-s
Multiple undo	Control-x u
Quit	Control-x Control-c
Split screen horizontally	Control-x 2
Unsplit entire screen	Control-x 1
Remove one screen partition	Control–x 0
Run Scheme	Meta (or ESC)-s
Evaluate Scheme expression	Control–c Control–e

Unix

Unix (more specifically, Solaris) will be the official OS of 61A. You will need to know how to do basic housekeeping in the Unix environment: copy files, organize them into directories (folders) and remove files. Here's a few commands, with their DOS analogues:

DOS	UNIX	Description
dir	ls	List directory contents
cd	cd	Change directory
md	mkdir	Make a new directory
copy	cp	Copy file
move	mv	Move a file/change filename
type	cat/more	Show the contents of this text file
del	rm	Delete file
	pwd	What directory am I in?
	&	Run a program in the background (multitask): eg. “emacs &”
	ssh	Secure Shell; used to login securely to another machine
	sdiff	Show differences between two files

Feel free to explore Unix further on your own. If you want information on a specific Unix utility foo, type “man foo” at the shell to access the online manual page for it.

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[1] See footnote 31 on Page 399 of Structure and Interpretation of Computer Programs.