#Checksum Digit, there is an algorithm that checksum must match
#A. Import the libraries
require 'rubygems'
require 'creditcard'

#B. Boolean test as to whether this number is a valid credit card
puts '5276 4400 6542 1319'.creditcard?

#C. Check the type of credit card it is
puts '5276 4400 6542 1319'.creditcard_type

(SELECT a FROM t1 WHERE a=10 AND B=1)
UNION
(SELECT a FROM t2 WHERE a=11 AND B=2)
ORDER BY a LIMIT 10;

ssh-keygen -t rsa
cat ~/.ssh/id_rsa.pub | ssh username@remoteserver "cat - >> /home/username/authorized_keys"

#Find out the Current Time
t = Time.now

#Find out the Month, Day, or Year individually
puts t.mon.to_s + "/" + t.day.to_s + "/" + t.year.to_s

#Find out the UTC
puts t.utc

###########################
#User Formatted Characters
###########################
#the String For Time function allows you to mix text with data
puts t.strftime("The Document print data is %m/%d/%Y")

#Another way to Display the Month Day, Year
puts t.strftime("%b %d, %Y")

mkdir -p /Users/Shared/Desktop/homer/marge/bart/lisa/maggie/snowball2

#or, in a .bash_profile
alias mkdir="mkdir -p "

function init()
{
	//vars
	$1
	
	//functions
	$2
	
	//listeners
	$3
}
YAHOO.util.Event.onDOMReady(init);

<?php if (count($taxonomy)): ?>
<?php 
$terms = taxonomy_node_get_terms_by_vocabulary($node->nid, 1);
foreach ($terms as $term) {
  $tags[] = l($term->name, taxonomy_term_path($term));
	}
if ($tags){
 print t("Professional Areas") . ": " . implode(' | ', $tags);
} ?>
<br />
<?php
$terms = taxonomy_node_get_terms_by_vocabulary($node->nid, 2);
foreach ($terms as $term) {
  $tagsTwo[] = l($term->name, taxonomy_term_path($term));
	}
	if ($tagsTwo){
 print t("Focus Areas") . ": " . implode(' | ', $tagsTwo);
}?>
<?php endif; ?>

def func1
  i = 0
  while i <= 5
    puts "func1 at: #{Time.now}"
    sleep(2)
    i = i + 1
  end
end
def func2
  i = 0
  while i <= 5
    puts "func2 at: #{Time.now}"
    sleep(1)
    i = i + 1
  end
end

puts "Start at: #{Time.now}"
t1 = Thread.new{func1()}
t2 = Thread.new{func2()}
t1.join
t2.join
puts "End at: #{Time.now}"

#A. Create an array
names = %w[chris sandy josie billy suzie]

#B. Find the length of the array and iterate through it 
names.length.times do |i|
  puts i.to_s + " " + names[i]
end

#A. Import the YAML Library
require 'yaml'
#B. Create an array
names = %w[chris sandy josie billy suzie]

#Example 1 : Converting an array into YAML using: to_yaml
yaml_example1 = names.to_yaml
puts yaml_example1

#Example 2: Converting an array into YAML using: dump()
yaml_example2 = YAML::dump(names)
puts yaml_example2

#Example 3: Loading YAML back into an array using: load()
array_example = YAML::load(yamloutput2)
puts array_example