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Section 24.
Web servers

"I’d say there was a fair amount of skepticism at the time about whether the Internet held any promise. And of course I felt that it did."

Jim Clark - founder of Netscape.

24. Internet web servers.

UNIX and Linux provide the vast majority of services available on the internet. In the field of web servers UNIX/Linux platforms with the Apache web server, dominate cyberspace.

The statistics produced by Netcraft in spring 2012 show that Apache continues to be preeminent.

Image imgs/sa101-30.png

The above table is for the top servers across all domains. The figures for the total active sites across all domains show a similar Apache dominance at over 67%. Interestingly on this measure since November 2011 Nginx, an alternative open source web server knocks Microsoft into 3rd place but Apache continues to have 5 times as many sites as it’s nearest rival.

The Ubuntu Apache installation Guide is at

24.1. Apache installation.

Download and install with

apt-get install apache2

24.2. Exercise.

Use the Ubuntu guide to configure 2 virtual servers on your host. Ensure that there are sufficient differences in the opening page to make it immediately apparent that a different (virtual) server has been reached.

The layout and associated style sheets for this page are taken from the World Wide Web Consortium and used here under the W3C software licence.