Lecture 3
Hands-on Unix and PHP

Goals:
	practice with Unix and PHP
	learning to use Unix man pages
	learning to use PHP.net documentation and examples

/htdocs/courses/2013_spring/inls760_001/lect3

1. nano
	^ is the control key
	^W writes
	^X exits

2. tar
	create:   tar cvzf
	extract:  tar xvzf


3. php arrays

	a. numeric
		array4.php
	b. associative
		array5.php
	c. multidimensional
		array6.php
	d. exercise
		how would we print out array6 if no print_r

4. review file and explode


5. Sorting
	a. asort
		http://www.php.net/manual/en/function.asort.php
	b. ksort
		http://www.php.net/manual/en/function.ksort.php
	c. usort
		http://www.php.net/manual/en/function.uasort.php
	d. multisort
		http://php.net/manual/en/function.array-multisort.php


6. Regular Expressions

	http://www.php.net/manual/en/reference.pcre.pattern.syntax.php

	http://php.net/manual/en/book.pcre.php
	http://support.sas.com/rnd/base/datastep/perl_regexp/regexp-tip-sheet.pdf
	http://www.cs.tut.fi/~jkorpela/perl/regexp.html

	a. syntax
	b. preg_match
		http://www.php.net/manual/en/function.preg-match.php	
	c. preg_replace
		http://www.php.net/manual/en/function.preg-replace.php

	exercises:
		use wget to get a web page
			wikipedia disambiguation pages
				http://en.wikipedia.org/wiki/Vulcan_%28disambiguation%29
			Project Gutenberg, Grimms Fairy Tales
				http://www.gutenberg.org/files/2591/2591-h/2591-h.htm
		read into an array in PHP using file
		now try to
			a. output lines with 'vulcan'
			b. output lines with 'Vulcan' or 'Vulcan'
			c. output parententical expressions on the page
			d. output the senses of vulcan

7.  Finish Lect2 slides

8.  VirtualBox + Ubuntu
	

sudo apt-get upgrade
sudu apt-get install ubuntu-desktop