symbolic toolbox

Using Octave and dealing with variables and looking for a representation? I have suffered not able to get the right word for it. "Symoblic toolbox"

Also available for Octave!
apt-get octave octave-symbolic

merge pdf files

gs -q -sPAPERSIZE=letter -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile=out.pdf in1.pdf in2.pdf in3.pdf ...

ref:http://ubuntuforums.org/showthread.php?t=262411

managing shared libraries

Libraries have been installed in:
/usr/local/lib

If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the `-LLIBDIR'
flag during linking and do at least one of the following:
- add LIBDIR to the `LD_LIBRARY_PATH' environment variable
during execution
- add LIBDIR to the `LD_RUN_PATH' environment variable
during linking
- use the `-Wl,-rpath -Wl,LIBDIR' linker flag
- have your system administrator add LIBDIR to `/etc/ld.so.conf'

See any operating system documentation about shared libraries for
more information, such as the ld(1) and ld.so(8) manual pages.

How to rename a drive in ubuntu Jaunty

just follow the instructions for the USB Drive renaming by installing gparted.

https://help.ubuntu.com/community/RenameUSBDrive

Latex in windows

begin matrix, bmatrix, matrix and others not working?
latex error : "environment bmatrix undefined"



try this :

\usepackage{amssymb,amsmath}

bonus tip# : the use of the curly bracket is essential for most functions, symobls, complex sub and superscripts in latex

bonus tip#2 \usepackage[small]{caption2} for smaller captions

Ubuntu : syntax on does not work

trying to use the syntax higlight in vim and it gives errors?

line 20:E319: Sorry, the command is not available in this version: syntax on

Try install vim-full

sudo apt-get vim-full

and then, edit the /etc/vim/vimrc file to uncomment syntax on and other useful utilities.

Cheers!!

http://devtime.blogspot.com/http://www.blogger.com/img/blank.gif2007/05/enable-vim-syntax-color-highlightning.html
http://ubuntuforums.org/archive/index.php/t-626294.html
http://www.cyberciti.biz/faq/howto-install-full-vim-under-ubuntu-linux/

Fedora 10 Cheatsheet: digitizor

One stop for Post-install mechanics :

http://digitizor.files.wordpress.com/2009/01/fedora10-cheatsheet.pdf