LaTeX

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

$ sudo apt-get install texlive kile

$ sudo apt-get install tetex-base tetex-bin

http://www.andy-roberts.net/misc/latex/latextutorial1.html
http://www.techworld.com.au/article/195791/publishing_high-quality_documents_kile
http://www.maths.tcd.ie/~dwilkins/LaTeXPrimer/
http://www.eng.cam.ac.uk/help/tpl/textprocessing/
http://www.mcnabbs.org/andrew/linux/latexres/

--- one.tex ---
\documentclass[a4paper,12pt]{article}
\begin{document}

Hello World!

\end{document}
--- one.tex ---

$ pdflatex one.tex

or

$ latext one.tex
$ dvips one.dvi -o one.ps
$ ps2pdf one.ps one.pdf

or

$ dvipdf one.dvi one.pdf