Guiding Principle of OLI Course Design: (Copied from the OLI site )

• To develop the first iteration of the course based on well-confirmed cognitive theory “Cognitively-informed Education”.
• Then engage in a process of “Data-driven Iteration” to improve learning outcomes.

Successful learning requires the encoding of declarative knowledge (e.g., facts and principles), the application of procedural knowledge to achieve goals in problem solving effectively and efficiently, and the integration of contextual knowledge to transfer the learning to contexts outside the teaching environment.

WinMerge Folder Diff tool is very useful and can produce reports in CSV,tab de-limted , HTML and XML format. This serves as the merge documentation for later reference. Its File Diff and Merge tool is also very user friendly and provides several Merge operations.

I would highly recommend WinMerge to anyone who has to do a lot of merging which is typical of large scale Software development.

Well thought out and with lot of common sense.
Especially, Death-by-planning AntiPattern is very good read.

If you are into Software project management please read more of Antipatterns.This give good insights on common project management pitfalls.

if you are a programmer,designer then Patterns and Refactoring is for you. It somewhat resembles Design patterns by Eric Gamma et al.

Here, i have used Ubuntu/Debian Distribution.
First, install the webmin package. If the webmin install package is in .deb format, then issue the below command

sudo dpkg –install webmin_1.390.deb

If the required perl modules are already installed, then you will not see any dependency errors. If you do see, then you need to install all the dependency.
i am installing the whole perl and other perl modules required by webmin.

sudo apt-get install perl libnet-ssleay-perl openssl libauthen-pam-perl libpam-runtime libio-pty-perl libmd5-perl

Now run
sudo dpkg –install webmin_1.390.deb

You should be all set now.

This snippet shows you how to setup the proxy address for apt-get, wget and such programs to access internet.

First method:

In Bash Command Shell, execute

export http_proxy=http://proxy-address:portnumber

proxy-address is your proxy server address.

For example if your proxy server address is proxy1.mydomain.com and port is 8080 then

export http_proxy-http://proxy1.mydomain.com:8080

Second Method

in .bashrc file , type the following

http_proxy=http://proxy-address:portnumber

export http_proxy

I have been hosting sites for past 3 years and have tried several web hosting providers and finally settled down to Nearlyfreespeech for shared hosting and imountain for VPS.

NearlyFreespeech.net is probably one of the best shared host you can find in the market. They are purely Pay-for-what -you-use kind of host. No fixed monthly fees. Stability is very good and have a very active support forum. This site is hosted with Nearlyfreespeech.net.

imountain.com is probably one of the best VPS host. They are priced slightly higher than the market but you can get at least 30% discount if you take up the offer from webhostingtalk.com . Very high quality machines and they have a policy of 10 accounts per machine. The database server, mail server, dns server run on a dedicated machine and not on your VPS partition. So your VPS is always blazing fast and memory consumption is very low. Support is very quick. Normally your questions get answered in 10-15 mins. i have hosted my django webframe work with this host.

Other hosts i have tried are listed below and i briefly mention what i like and dont like about them

1) Globat. Horrible Host. This was my first host and i was naive at that time. I went for large disk space at that time. It was 2.5 Gig storage. I was with them for one year as i had already paid for a year. I was not able to run any scripts that executes beyond 5 seconds. Server was down several times and slow.

2) asmallorange: Good host but storage was very low. But most of the time email from their server were identified as spams. After several tries with their tech support i gave up.

3) 1and1. Very stable and large host. They provided ample storage space. But you cant execute any scripts that run longer than 10 secs. So i could not run any of image gallery. I was with this host for one and half years and gave up as my requirements changed.

Assumptions

Apache 2 Webserver

OpenSSL is installed and functional

In possession of Domain Name. If not obtain one from many Domain Name sellers like GoDaddy

1. Generate a RSA Private Key
   sudo openssl genrsa -out my.key 1024
2. Generate a CSR ( Certificate Signing Request ). The CSR must be signed by private key “my.key” generated in the step 1. Please note you must enter at least your domain name as highlighted below in bold.

openssl req -new -key my.key -out mysite.csr

Country Name (2 letter code) [GB]:SG
State or Province Name (full name) [Berkshire]:Singapore
Locality Name (eg, city) [Newbury]:Singapore
Organization Name (eg, company) [My Company Ltd]:NA
Organizational Unit Name (eg, section) []:NA
Common Name (eg, your name or your server’s hostname) []:your.domain.com
Email Address []:your@email.com

Now you need to take mysite.csr to a Certificate signing authority to get your SSL Certificate.

I used a free Certificate authority named CAcert.org . Very highly recommended by open source community. But the issue is that many mainstream browsers do not automatically recognize CAcert. So for first time visitors, a warning will pop up. Just accept it permanently. After this, the pop up wont show when ever you visit from the same browser.

1. First signup with CACert. Once done, then go to the next step.
2. Then click on “Domains->Add” as shown below



3. Then add your domain in the provided textbox



4. Cacert will do a domain verification by sending an email to your registered email address. Open your email and click on the link sent to you by the CAcert.
5. Then Click on “Server Certificate ->New” to get a new certificate for your site.



6. Open the CSR file “mysite.csr” you created above and cut and paste the content of the file into the provided text box and click submit



7. CAcert will show the certificate file. Copy and store it on a file named mysite.crt. (filename can be anything )
8. Configure SSL options in httpd.conf file.

An example SSL enabled virtual host configuration is shown below for your reference

NameVirtualHost *:443
<VirtualHost *:443>

ServerName your.domain.com
DocumentRoot /var/www/public

SSLEngine on
SSLCertificateFile /etc/httpd/mysite.crt
SSLCertificateKeyFile /etc/httpd/my.key
SSLVerifyClient optional

</VirtualHost>