Use the following command in your shell (the easy way):

wget -q -O http://codingwithcody.com/downloads/python_27_on_centos_56/install.sh | sh

Alternately, you can download and run it manually: Download install.sh

Here are the tarballs used just in case the servers hosting them go down and you’re eager to get Python 2.7 working:

• sqlite-amalgamation-3.7.3.tar.gz
• Python-2.7.1.tgz
• setuptools-0.6c11-py2.7.egg

And, just FYI, here’s the contents of install.sh:

yum -y install gcc gdbm-devel readline-devel ncurses-devel zlib-devel bzip2-devel sqlite-devel db4-devel openssl-devel tk-devel bluez-libs-devel make
 
cd /var/tmp
wget http://sqlite.org/sqlite-amalgamation-3.7.3.tar.gz
tar xfz sqlite-amalgamation-3.7.3.tar.gz
cd sqlite-3.7.3/
./configure
make
make install
 
cd /var/tmp
wget http://www.python.org/ftp/python/2.7.1/Python-2.7.1.tgz
tar xvfz Python-2.7.1.tgz
cd Python-2.7.1
./configure --prefix=/opt/python2.7.1 --with-threads --enable-shared
make
make install
 
touch /etc/ld.so.conf.d/opt-python2.7.1.conf
echo "/opt/python2.7.1/lib/" >> /etc/ld.so.conf.d/opt-python2.7.1.conf
ldconfig
 
ln -sf /opt/python2.7.1/bin/python /usr/bin/python2.7
 
cd /var/tmp
wget http://pypi.python.org/packages/2.7/s/setuptools/setuptools-0.6c11-py2.7.egg
sh setuptools-0.6c11-py2.7.egg --prefix=/opt/python2.7.1
 
/opt/python2.7.1/bin/easy_install pip
ln -sf /opt/python2.7.1/bin/pip /usr/bin/pip
 
pip install virtualenv
ln -sf /opt/python2.7.1/bin/virtualenv /usr/bin/virtualenv
 
mv /usr/bin/python /usr/bin/python-backup
ln -s /usr/bin/python2.7 /usr/bin/python

Any improvements are more than welcome. Enjoy and happy coding!

The answer is this list (published as an HTML table below as well as a CSV file at the link below). This list still has minor gaps, but is largely complete and ready for implementation. In addition to the name details (along with the ISO-3166-1 Alpha-2 codes, safe for one-to-one relationships) are the latitude, longitude and square kilometers for each (where information from my research was readily available as my deadlines on this assignment were not allowing for further research). If you have additional details, please leave them in a comment below and I can add them to the list and update the list for all to enjoy. The CSV is field separated by a comma, uses double-quotes for the text delimiter, CRLF is the row delimiter and the title is the first row.

If you find any part of this collection in error, please let me know so I can make the corrections.

Download CSV

Update – Dec 2011 Many thanks to our friend Lars for combing over the list and poviding updated values for country names. If there are any further updates or corrections, please make note in the comments below and I’ll get this list updated with those values.

To understand more about the fuse settings for your microcontroller, visit Engbedded’s AVR Fuse Calculator.

To write fuse settings, you will need a programmer with this capability. I use Mighty Ohm’s high-voltage rescue shield available here.

Arduino Uno

Arduino Duemilanove or Nano w/ ATmega328

Arduino Diecimila, Duemilanove, or Nano w/ ATmega168

Arduino Mega 2560

Arduino Mega (ATmega1280)

Arduino Mini

Arduino Fio

Arduino BT w/ ATmega328

Arduino BT w/ ATmega168

LilyPad Arduino w/ ATmega328

LilyPad Arduino w/ ATmega168

Arduino Pro or Pro Mini (5V, 16 MHz) w/ ATmega328

Arduino Pro or Pro Mini (5V, 16 MHz) w/ ATmega168

Arduino Pro or Pro Mini (3.3V, 8 MHz) w/ ATmega328

Arduino Pro or Pro Mini (3.3V, 8 MHz) w/ ATmega168

Arduino NG or older w/ ATmega168

Arduino NG or older w/ ATmega8

This is simply a cleanup step and the code below is the revised version of the functionality from step 2. Please update the constants in the Config class to use this script.

Requests to this new version also have an argument change and the URL should now look like this (where ID is the id for the user that will receive the email):

http://YOUR-SITE.com/signup_complete.php?userId=ID

View Code PHP

<?php   // SCRIPT CONFIGURATION class Config {   const EMAIL_ADDRESS = 'you@site.com'; // YOUR EMAIL ADDRESS   const SITE_DOMAIN = 'site.com'; // YOUR DOMAIN const IMG_PATH = '/images/email/'; // PATH TO PNG IMAGE AND TRACK.PHP   const DB_HOST = 'localhost'; // YOUR DB HOST const DB_USERNAME = 'username'; // YOUR DB USERNAME const DB_PASSWORD = 'password'; // YOUR DB PASSWORD const DB_SCHEMA = 'database'; // YOUR DATABASE/SCHEMA NAME   }   // PRESISTENT DB CONNECT mysql_pconnect(Config::DB_HOST, Config::DB_USERNAME, Config::DB_PASSWORD); mysql_select_db(Config::DB_SCHEMA);   // USER MODEL class User {   public $id; public $emailAddress; public $status = 0; // WE'LL USE THIS AS AN ACTIVE/CAN-BE-EMAILED FLAG   // STATIC METHODS   public static function addUser($emailAddress) { $result = mysql_query('INSERT IGNORE INTO `user` SET `email_address` = "' . mysql_escape_string($emailAddress) . '";'); }   // PUBLIC METHODS   public function __construct($userId){ $this->id = $userId;   if($this->fetchDetails()){ $this->status = 1; } else { $this->status = 0; } }   // PRIVATE METHODS   private function fetchDetails(){ $result = mysql_query('SELECT * FROM `user` WHERE `user_id` = ' . $this->id . ';'); if(mysql_num_rows($result) == 1){ $row = mysql_fetch_array($result); $this->emailAddress = $row['email_address']; return true; } else { return false; } } }   // EMAIL MODEL class Email {   public static function send(User $user){ if($user->status === 1){ $subject = 'Test email from ' . Config::SITE_DOMAIN; $body = '<html><body><h1>Test Email</h1><img src="http://' . Config::SITE_DOMAIN . Config::IMG_PATH . 'image' . $user->id . '-' . rand(0, 9999) . '.png" /></body></html>'; $headers = "From: " . Config::EMAIL_ADDRESS . "\r\n"; $headers .= "Content-type: text/html\r\n"; return mail($user->emailAddress, $subject, $body, $headers); } else { return false; } }   }   $user = new User($_REQUEST['userId']); Email::send($user);   ?>

First, we’ll need a table to record the information. The following are two SQL queries to create the tables we need. The first query is for the table we’ll use for the tracking event and the second is a query to create the user table to identify each unique user (if you use some type of user login/account system, feel free to adjust the table parameters to work with that system):

View Code SQL

CREATE TABLE `user` ( `user_id` int(3) NOT NULL AUTO_INCREMENT, `email_address` varchar(40) DEFAULT NULL, PRIMARY KEY (`user_id`), UNIQUE KEY `email` (`email_address`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8

View Code SQL

CREATE TABLE `email_tracker_event` ( `event_id` int(3) NOT NULL AUTO_INCREMENT, `user_id` int(3) DEFAULT NULL, `event_timestamp` datetime DEFAULT NULL, PRIMARY KEY (`event_id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8

Next, in the document root folder for your site, add a file named signup_complete.php. This file will be the last step to your user signup form (which goes beyond the scope of this tutorial) and requires only that the user’s email address be passed as the first argument to the addUser() function we’re creating. If you are using a framework, consider adding a static method similar to this to your user model:

View Code PHP

<?php   mysql_connect('YOUR-DB-HOSTNAME', 'YOUR-USERNAME', 'YOUR-PASSWORD'); mysql_select_db('YOUR-DB');   function addUser($emailAddress){   // PREPARE QUERY $query = 'INSERT IGNORE INTO `user` SET `email_address` = "' . mysql_escape_string($emailAddress) . '";';   // EXECUTE QUERY $resultResource = mysql_query($query);   // IF IT EXECUTED if($resultResource !== false){   // AND AFFECTED ONE ROW if(mysql_affected_rows() === 1){   // RETURN THE ID return mysql_insert_id(); } else if(mysql_affected_rows() === 0){   // OOPS! THIS ADDRESS IS ALREADY IN THE TABLE, RETURN THE ID $result = mysql_query('SELECT `user_id` AS `id` FROM `user` WHERE `email_address` = "' . mysql_escape_string($emailAddress) . '";'); $row = mysql_fetch_array($result); return $row['id']; } }   // SOMETHING MUST HAVE GONE WRONG, RETURN FALSE return false; }   function sendEmail($emailAddress, $id){ $subject = 'Test email from your site'; $body = '<html><body><h1>Test Email</h1><img src="http://YOUR-SITE.com/assets/images/email/image' . $id . '-' . rand(0, 9999) . '.png" /></body></html>'; $from = 'YOUR-EMAIL-ADDRESS'; $headers = "From: " . $from . "\r\n"; $headers .= "Content-type: text/html\r\n";   return mail($emailAddress, $subject, $body, $headers); }   // KILL ANY REQUEST THAT HAS NEWLINE/RETURN IN THE EMAIL ADDRESS, THEY'RE TRYING TO PULL A FAST ONE ON YA if (eregi("(\r|\n)", $_REQUEST['email'])) { die(); }   // ADD THE USER AND GET THE ID $userId = addUser($_REQUEST['email']);   if($userId !== false){ echo 'USER ID: ' . $userId; if(sendEmail($_REQUEST['email'], $userId)){ echo 'Email sent!'; } else { echo 'Email NOT sent!'; }; } else { echo 'Something went wrong, check DB connection.'; }   ?>

Using the following URL, this script will add a user to the user table we created earlier and return the new user’s ID. This ID is what we will use for the image to track emails from the system that they have viewed.

http://YOUR-SITE.com/signup_complete.php?email=name@site.com

Last but not least, we’ll need to modify the /images/email/track.php we created in the previous post to record the viewing of the email:

View Code PHP

<?php   mysql_connect('YOUR-DB-HOSTNAME', 'YOUR-USERNAME', 'YOUR-PASSWORD'); mysql_select_db('YOUR-DB');   $trackingNumber = $_REQUEST['x']; mysql_query('INSERT INTO `email_tracker_event` SET `user_id` = ' . mysql_escape_string($trackingNumber) . ', `event_timestamp` = NOW();');   header('Content-Type:image/png'); echo file_get_contents('track.png');   ?>

In part 3 of this tutorial series, we’ll look at how to create campaigns and reports.

UPDATE:

Part 2.5 has been posted to clean up the code above and prepare it for the next step in creating a more complex email tracking system. Please review this step before proceeding to step 3 (you can still use the code above, but we’ll be building something much more complex by the end of this series).

First, create a directory in your images folder called ‘email’ (/images/email/ for this tutorial). Inside that folder, create an .htaccess file. Be sure that your Apache directive for AllowOverride is set to All.

In this .htaccess file, add the following:

View Code HTACCESS

RewriteEngine On ReWriteRule ^image(.*?)\-\d{4}\.png$ track.php?x=$1 [L]

Next, create a 1x1px PNG image in the same folder and name it track.png. This will be the image loaded in the email.

Finally, in the same folder create a file named track.php and add the following:

View Code PHP

<?php   $trackingNumber = $_REQUEST['x']; // logic here for updating your database tables   header('Content-Type:image/png'); echo file_get_contents('track.png');   ?>

Inside the email you are sending, include the following line. This will allow the system to track the ID ’1234′ when that image is loaded. Additionally, as we are using htaccess to mask the script being used, the image will appear to be a regular PNG without any extra parameters.

View Code HTML

<img src="http://www.yoursite.com/images/email/image1234.png" />

In part 2 of this tutorial, we’ll discuss where the ID is generated and how it is used.

Original post from VPS.net

View Code BASH

#Shut down non essential services:   # 1. sendmail # Purpose: sending mail, most use another /etc/init.d/sendmail stop chkconfig sendmail off   # 2. nfs # Purpose: mount a disk from another machine /etc/init.d/portmap stop /etc/init.d/nfs stop chkconfig portmap off chkconfig nfs off   # 3. chargen # Purpose: testing char generation /etc/init.d/chargen stop chkconfig chargen off   # 4. ypbind # Purpose: stores info on NIS domains /etc/init.d/ypbind stop chkconfig ypbind off   # 5. anacron # Purpose: cron for systems that shut down a lot /etc/init.d/anacron stop chkconfig anacron off   # 6. atd # Purpose: at cmd daemon /etc/init.d/atd stop chkconfig atd off   # 7. routed # Purpose: Route packets, log tables /etc/init.d/routed stop chkconfig routed off   # 8. snmpd # Purpose: network monitoring /etc/init.d/snmpd stop chkconfig snmpd off   # 9. gpm # Purpose: mouse /etc/init.d/gpm stop chkconfig gpm off   # 10. smartd # Purpose: disk health monitor /etc/init.d/smartd stop chkconfig smartd stop   # 11. hidd # Purpose: bluetooth /etc/init.d/hidd stop chkconfig hidd off   # 12. pcscf # Purpose: smart card reader /etc/init.d/pcscd stop chkconfig pcscf off   # 13. isdn # Purpose: digital network /etc/init.d/isdn stop chkconfig isdn off   # 14. kudzu # Purpose: watches for new hardware /etc/init.d/kudzu stop chkconfig kudzu off   # 15. cups # Purpose: printing /etc/init.d/cups stop chkconfig cups off   # 16. xfs # Purpose: serves x# 1# 1 fonts /etc/init.d/xfs stop chkconfig xfs off   # 17. nfslock # Purpose: file sys lock /etc/init.d/nfslock stop chkconfig nfslock off   # 18. canna # Purpose: Chinese chars /etc/init.d/canna stop chkconfig canna off   # 19. freeWnn # Purpose: Japanese chars /etc/init.d/FreeWnn stop chkconfig FreeWnn off   # 20. cups-config-daemon # Purpose: print config /etc/init.d/cups-config-daemon stop chkconfig cups-config-daemon off   # 21. iiim # Purpose: internet language input /etc/init.d/iiim stop chkconfig iiim off   # 22. mDNSResponder # Purpose: dns service discovery /etc/init.d/mDNSResponder stop chkconfig mDNSResponder off   # 23. nifd # Purpose: monitors net interfaces /etc/init.d/nifd stop chkconfig nifd off   # 24. rpcimpad # Purpose: used for nfs server /etc/init.d/rpcimpad stop chkconfig rpcimpad off   # 25. bluetooth # Purpose: bluetooth devices /etc/init.d/bluetooth stop chkconfig bluetooth off   # 26. saslauthd # Purpose: handles plaintext authentication requests /etc/init.d/saslauthd stop chkconfig saslauthd off Notes: some systems use this for email auth!   # 27. avahi-daemon # Purpose: instant network recognition /etc/init.d/avahi-daemon stop chkconfig avahi-daemon off   # 28. avahi-dnsconfd # Purpose: instant network recognition /etc/init.d/avahi-dnsconfd stop chkconfig avahi-dnsconfd off   # 29. sbadm # Purpose: rapid reboot /etc/init.d/sbadm stop chkconfig sbadm off   # 30. haldaemon # Purpose: monitors for hardware changes /etc/init.d/haldaemon stop chkconfig haldaemon off   # 31. acpi # Purpose: sleep/hibernate control /etc/init.d/acpi stop chkconfig acpi off   # 99. gamin # Purpose: monitors file/dir changes /etc/init.d/gamin stop yum -y remove gamin

ln -s /var/www/html/production/clientside/js/ /var/www/html/js/

ln -s /var/www/html/production/clientside/css/ /var/www/html/css/

ln -s /var/www/html/production/clientside/images/ /var/www/html/images/

Bear in mind that if you are using a framework that has pretty URL rules in the .htaccess file, you will have to make exclusions (below is the basic /var/www/html/.htaccess in our example framework):

RewriteEngine on
RewriteCond $1 !^(index\.php|images|robots\.txt|css|js)
RewriteRule ^(.*)$ /index.php/$1 [L]