One of the old objections to UNIX was there were so many variants. The fact that lex, yacc, vi, troff and other commands ran uniformly across all of them didn't cut the ice. The plate of spaghetti here represents most of the variants and the cross-fertilization. Minix shouldn't be free-standing: it arises out of V7 from Bell Labs. I miss Dell UNIX, the best n86 version of SVR4.
The really important thing is the fact that every one of these streams is used for web hosting, and that the UNIX+Linux systems total a remarkable 64% of all sites. In other words, just about two-thirds of the Web is powered by UNIX or Linux.
Not bad for an upstart.
After I took part on a panel at the FreeBSD conference in October, an attendee invited me to test the honesty of both Linux Journal and its community by looking at exactly which operating systems hosted the most popular Web sites. So I did. The server and host columns below contain exactly the data yielded by Netcraft at its “What's That Site Running?” page (http://www.netcraft.com/whats/) on October 26, 1999.
The source list of top 25 sites (in the U.S.) comes from Media Metrix, which is the primary source of web-site popularity figures.
Indeed, the results look good for BSD (5). They look better for Solaris (10). They perhaps look best for Bill Joy (18), whose genius is behind the Berkeley, Digital (3) and Sun breeds of UNIX. Although only Real Networks and Angelfire were found to be running on Linux (2), Netcraft informs us that other Linux sites include Deja.com, eToys, Go2Net and The British Royal Family (we knew those folks had taste).
Since we're being utterly fair here, Microsoft's NT (5) doesn't do too badly, either.
Next, the necessary disclaimer. “There's no sure way to tell what OS a host is running,” says our top tech wizard, Dan Wilder. “Indeed, there are lots of ways to fool people about what host is running. OS names are easily spoofed. We used to spoof them here at SSC, to foil hackers.” To find a fun hack on the supply side of this information, look at the server finding for Real.com, below.
Consolation: as we see elsewhere in this section, Linux is gaining rapidly overall and now hosts about one-third of all web domains (according to The Internet Operating System Counter).
ALS '97 had about 20 vendors and a few hundred attendees.
ALS '98 was like reverse time travel. It had both the atmosphere and the feeling of USENIX conferences before the mid-80s, with about 40 vendors and over a thousand attendees. (Atlanta USENIX in 1986 had 1200 attendees.)
ALS '99 was still full of talks and demos and corridors and dinners. But now, after only three years, there was active cooperation between the Atlanta Linux Enthusiasts and USENIX: it had two days of technical tutorials; the show floor was over double the size of what it was in 1998; and there were 3,000 attendees.
The discussions were intense; the atmosphere was friendly; more got done in the hallways, bars and lounges than in the sessions. There was a feeling of intellectual ferment.
Eric Raymond was there. Maddog was there. This was the Linux geek event not to miss. My favorite hardware display was Compaq's Beowulf cluster; software was from Hummingbird Communications, Ltd., (http://www.hummingbird.com/), a Linux version of their Fulcrum search server and OpenSales (http://www.opensales.com), a neat e-commerce solution.
But I have to admit that the product of choice was Raymond's The Cathedral & the Bazaar, just published by O'Reilly (see my review in this issue of LJ).
Marc Torres and his crew did a splendid job. I hope they invite me back next year.
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