04-13-2006
You can download the source code for GNU utilities from
www.gnu.org, the kernel from kernel.org, and source code for various other utilities from sourceforge.net and freshmeat.net.
If you are just talking about command usage, there are *many* good books available - Linux in a Nutshell from O'Reilly is probably your best choice for an all-in-one command reference covering 90% of what you'll need day-to-day.
Cheers
ZB
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LEARN ABOUT DEBIAN
derivations
DERIVATIONS(7) Derivations of Applied Mathematics DERIVATIONS(7)
NAME
derivations - book: Derivations of Applied Mathematics
DESCRIPTION
Understandably, program sources rarely derive the mathematical formulas they use. Not wishing to take the formulas on faith, a user might
nevertheless reasonably wish to see such formulas somewhere derived.
Derivations of Applied Mathematics is a book which documents and derives many of the mathematical formulas and methods implemented in free
software or used in science and engineering generally. It documents and derives the Taylor series (used to calculate trigonometrics), the
Newton-Raphson method (used to calculate square roots), the Pythagorean theorem (used to calculate distances) and many others.
READING THE BOOK
Among other ways, you can read the book on your computer screen by opening the file /usr/share/doc/derivations/derivations.ps.gz with the
gv(1) program under X(7). To print the book on a standard postscript printer, just zcat(1) then lpr(1) the same file.
FILES
/usr/share/doc/derivations/derivations.ps.gz
the book in postscript format
/usr/share/doc/derivations/derivations.pdf.gz
the book in PDF
BUGS
The book is a work in progress.
AUTHOR
The book and this manpage are written by Thaddeus H. Black, who also maintains the Debian package derivations in which they are distrib-
uted. Users who need to contact the author in his role as Debian package maintainer can reach him at <thb@debian.org>. However, most e-
mail will naturally be about the book itself: this should be sent to <thb@derivations.org>.
COPYLEFT
Copyright (C) 1983-2010 Thaddeus H. Black.
The book, this manpage and the entire derivations distribution are free software. You can redistribute them and/or modify them under the
terms of the GNU General Public License, version 2.
SEE ALSO
gv(1) [gv], zcat(1) [gzip], psselect(1) [psutils], lpr(1) [lpr], octave(1) [octave]
Thaddeus H. Black 10 March 2010 DERIVATIONS(7)