One Small - Virtual - Step
One of the most unforgettable quotes on Earth — witnessed live by some six hundred million people — wasn't uttered here. "That's one small step for [a] man, one giant leap for mankind," the famous words of astronaut Neil Armstrong upon becoming the first person to set foot on another world, have a lasting legacy not likely to be met until human exploration eventually reaches our planetary neighbors.
This week marks the fortieth anniversary of Apollo 11's historic mission, surely one of mankind's greatest technical achievements. Lovers of all things technological that we are, it seems only fitting to celebrate this milestone by way of the technology that has arisen since that time. Particularly fitting is the World Wide Web, which made its public debut two weeks shy of the missions twenty-second anniversary — Google lists some 11,200,000 sites referencing the landmark flight, from those celebrating its enduring legacy to those placing it on a Hollywood soundstage.
Among the former are a plethora of sites, the crown jewel being the recently-launched We Choose The Moon from the John F. Kennedy Presidential Library & Museum. The site offers "real-time" information about the mission, as though it was currently taking place, along with more information about the events than anyone could ever possibly digest. (Adobe's Flash Player 10 is required.)
NASA, of course, has their own collection of sites about the lunar landing. It's Apollo 40th Anniversary site offers highlights, including comments from President Obama on the historic mission, information about the US-USSR space race, a downloadable multimedia package dubbed the First Footprints Toolkit, image galleries, personal stories, even the planting of a "moon tree" from seeds carried on Apollo 14.
Not to be outdone, NASA's Lunar Science Institute has build a page celebrating the Apollo missions and providing information about the current plans to return to the moon. It provides a wealth of information, including interviews with eminent astronomy experts, updates about spacecraft and satellites scouting out the return, and upcoming moon-related NASA events. The agency's Human Space Flight site offers historical information about the mission and its crew, along with links to a number of other informative sites.
More than a little of the physical history of human lunar exploration has made its way into the collections of the Smithsonian Institution. The National Air and Space museum has put together a site about the Apollo 11 landing, with details about the artifacts in its collection &mdash including the Colombia command module — facts about the crew and their mission, as well as an audio/video library.
Google, of course, is good for more than just hunting down websites about the moon landing. Its Google Moon application provides a Google Earth-like experience of the Apollo missions, including important landmarks from each of the missions. For those looking for a Web 2.0 way to celebrate the anniversary, Nature News is providing its own "real-time" streaming experience of the Apollo 11 events via Twitter.
There's an Apollo 11 easter egg of sorts for the programmers in the crowd as well. Though it's incomplete and forty years old, the source code of the original Colossus 2A (Comanche 055) software used on the Apollo 11 Command Module's Apollo Guidance Computer is available — and in the public domain. Volunteers have painstakingly transcribed the code from some 1750 images. Perhaps even more incredible is the work of John Pultorak, who after four years, $3000, and over 1,000 pages of documentation, built an accurate, functional reconstruction of the Apollo Guidance Computer. Somehow that Commodore 64 in the basement pales in comparison...
Justin Ryan is a Contributing Editor for Linux Journal.
Practical Task Scheduling Deployment
July 20, 2016 12:00 pm CDT
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
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With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide