for i in `ls -1 | grep -v <filetokeep>`; do rm -rf $i; done

• to generate a .s: gcc -S -c foo.c
• to output combined C and assembly: gcc -c -g -Wa,-a,-ad foo.c > foo.lst
• to assemble a .s: as -o foo.o foo.s. Use -gstabs for debug and -a to print memory listing.
• to assemble a .o: gcc foo.o -o foo

Solaris 10	OpenSolaris 2008.11	Ubuntu
CSWemacs	SUNWgnu-emacs and SUNWgnu-emacs-x	Works fine
/opt/csw/bin/pkg-get emacs	pkg install SUNWgnu-emacs SUNWgnu-emacs-x	apt-get install ??

• Homepage: See here
• The configuration file is ~/.emacs
• To reload .emacs: M-x load-file ~/.emacs

;; turn on font-lock mode
(global-font-lock-mode t)

;; enable visual feedback on selections
(setq-default transient-mark-mode t)

;; always end a file with a newline
(setq require-final-newline t)

;; stop at the end of the file, not just add lines
(setq next-line-add-newlines nil)

;;to display time
(display-time)

;;to set the cursor color
(set-cursor-color "red")

;;to set the font
(set-default-font "7x14")

;; foreground
(set-foreground-color "white")

;;to set background color to black
(set-background-color "black")

;;to manage the geometric size of initial window.
(setq initial-frame-alist '((width . 87) (height . 42)))

tar -xvf <thetar.tar> <thefile>

tar -xvf <thetar.tar> -C <thedir>

More exactly, it'll convert from “AA BB CC” to “0xAA, 0xBB, 0xCC” with each line having 8 bytes.

hexdump -v -e '8/1 "0x%02x, "' -e '"\n"' <filetodump>

Take a screenshot

$ xwd -root -out scrdump

View a screenshot

$ xwud -in scrdump