Booting problems poses serious challenge to the system administrators as system is down and no one can use it . This article tries to cover some of the general booting problems and their possible solutions to enable understand the problem cause and bring the system up very quickly.
Continue Reading…This how-to was orignaly posted on www.yuanjue.net but is no longer exists.
How to install FreeBSD as domU
NOTE: All these works here are still under testing and may not be suitable for production environment. We only support FreeBSD/i386 for now. As for the dom0 suppport of FreeBSD, we still need some time to get it ready. Stay tuned :-) How to install FreeBSD as domU
There are several files needed if one wants to install FreeBSD as a domU domain: kernel (freebsd-XENU_INSTALL & freebsd-XENU), config (freebsd_xen_INSTALL) and of course an image file if you install FreeBSD into a file instead of a real hard disk.
Continue Reading…Really Getting Started in Rails
The Review
It’s actually a pretty good article, the one with the most depth and breadth that I’ve seen at this point, and I used it to explore Rails last night. If you already know and understand programming concepts like database connectivity, object orientation, variables, loops, etc., then it’s a good place to start to get your hands dirty. After having actually produced some code, even if it was guided, I now have a better grounded understanding of Rails and that makes it easier to read the dry (not DRY, alas) documentation.
The only thing is, like all tutorials, it doesn’t always explain why. Why is that the syntax? What does that line mean, exactly? Why is the application designed so it fits together that way? Me, I like to know why–in reality, because of my designer brain, I have to know why to really grok it and retain it.
Continue Reading…This is the first installment in a series of three articles about PF. I originally wrote them as chapters for a book, but then publication was cancelled. Luckily, the rights could be salvaged, and now you get to enjoy them as undeadly.org exclusives. In celebration of the upcoming OpenBSD 4.0 release. ;)
Using Web Directories As A Link Building Tool by: SeoAmitPatel
Even in this era of technological breakthroughs, many website owners have a wrong idea about web directories. They think these web directories are simply a way to gain a one-way incoming link. Inclusion in the different web directories is seldom perceived as more than a one-time entry event. The aim is to get listed and obtain the inbound link, for better of for worse. Traffic from some mainstream directories is almost always low and rarely seen as part of the equation. The dormant capability of the directory listings as a source of potential link partners is almost never reckoned as a strategy at all, which is not a wise move at all.
In reality, web directories have far more possibilities concealed within their listings than it is generally believed. Many webmasters and search engine optimization experts ignore the less obvious value residing in the numerous categories.
By looking beyond the single link and searching abilities of a web directory, a website owner can have unrestricted access to innumerable potential link partners, waiting to be added. These partners can be found without much effort in the major internet directories and in the copious niche directory listings as well.
Not all web directories are adept in searching for links. The DMOZ (also known as the Open Directory Project), The Google Directory, The Yahoo! Directory are the directories which one should use in order to carry out link research tasks.
It will not be an exaggeration to compare the web directories to a gold mine of linking partners if one can get the full out of appropriate strategies. Any enterprising and prospecting webmaster can successfully use the web directories as an effective link building tool. It is expected that the readers will now be able to avail this opportunity after reading this article.
About The Author SeoAmitPatel is a SEO Expert who owns a SEO Company and which is working a major SEO Project
Continue Reading…To mount an iso image as if it were a cd one uses the mdconfig command. The man page gives more information, but the procedure would be, assuming you were in the same directory as image.iso
mdconfig -a -t vnode -f image.iso
Continue Reading…To generate a random password for a user (after having used the adduser script, which gives you the option to do that when first creating the user) once again the pw command is used.
Continue Reading…Beginners to Unix-like operating systems such as FreeBSD are often stymied by their network settings. Sure, the install process may have set up your NIC for you, but where do you go to view these settings, and how do you proceed if your NIC stops working? Since networking is such an integral part of computing, this article will demonstrate how to verify, configure, and optimize your network settings.
Continue Reading…You can save 90% of the disk-usage (aprx. 16MB only instead of 180MB) of a plain jail by sharing the /usr from the jail-host:
cd /opt/jails/192.168.0.100; rm -rf /usr; mkdir usr
mount -t null -o ro /usr /opt/jails/192.168.0.100/usr
and you need to change the /etc/rc.conf of the jail(s) with shared /usr slightly:
local_startup=”“
So the jails do not search startup in the /usr/local/etc/rc.d (of the jail-host).
jail_install takes the argument -light which does all the steps described above, then jail_start and jail_stop mount and umount /usr for you.
Important Note: The jail_root (defined in /usr/local/etc/jail.conf) must lie outside /usr (not /usr/jails) but /opt or something else, otherwise mount -t null won’t work as distinct paths (paths which are not part of each other) required.
I created a dedicated slice (/opt/) on my jail-host which only hosts the jails:
Continue Reading…/dev/ad0s1a on / (ufs, local) /dev/ad0s1e on /var (ufs, local, soft-updates) /dev/ad0s1f on /tmp (ufs, local, soft-updates) /dev/ad0s1g on /usr (ufs, local, soft-updates) /dev/ad0s1h on /opt (ufs, NFS exported, local, soft-updates)
Why Blog by: Jennifer Ryan
Why Blog Blog, blog, blog. What the heck is it anyway Does it ribbit Oink Croak One more torturous gadget I have no time for Entertainment Work Solitaire Whats in it for me If this sounds like you this new year, youre in a good place. At least youre alive, curious and addicted to email. A blog is a useful tool for your business if and only if you take time to get used to the process. Not only will a blog generate traffic for your web site; it will educate your prospects, connect people to your business and increase your search engine rankings. But I dont wanna! You whine, Im so busy, how can I possibly fit blogging into my already packed schedule Trust me, its worth it! I think blogging is a basic form of Rip, Mix and Learn (RML). Just like Im doing right now, Im ripping an idea from Alan and others, mixing it up with my own experience and reality, and writing about it as a way to clarify and learn. And really, it is the writing part that forces me to organize these thoughts and give some form to them. Its when the learning coalesces…
Continue Reading…What is Windows Vista by: Amanda Bode
What is Windows Vista I have been getting this a lot lately with all of the buzz and hype on the Internet. Windows Vista is the newest PC Operating System to be launched in November 2006. The system has already been sent out to over 2 million users for beta testing and has got huge reviews!
Windows Vista improves application quality, enables developers to create richer, easier-to-use applications, and adds comprehensive APIs for accessing connectivity infrastructure.
Continue Reading…eBay has become a household name for shoppers. A lot the buyers on eBay are not regular internet shoppers but they still shop on eBay. Such is the power of eBay giving simplicity of shopping and top bargains. From time to time, there is some fraud on eBay about fake fashion items, event tickets that do not exist, some expensive electronic items that do not exist. eBay does its best to intervene and resolve such disputes. As a shopper, you can follow these 10 safety tips to avoid being conned.
Continue Reading…If you want to stick to vim as you favorite (html) editor just like me I found the following tip to integrate tidy into vim to be able to check your html code if it clean and w3 compliant.
Add the following file type plugin for html files.
Continue Reading…Introduction
squid is a caching web proxy, it’s set up between web browsers and servers, fetching documents from servers on behalf of browsers. It can accelerate web access by caching frequently requested pages and serving them from its cache. It can also be used to filter pop-up ads and malware or to enforce access control (which clients may request what pages based on different authentication methods).
Traditionally, the proxy is an optional component, and browsers are configured to actively use the proxy. Transparent proxying means forcing all web traffic through the proxy without the cooperation (or knowledge) of the clients. Once all browser connections pass through the proxy, outgoing connections to external hosts can be restricted to the proxy, and direct connections from local clients can be blocked.
Continue Reading…VMware has just released version 1.0 of its free VMware Server. With VMware Server you can create and run guest operating systems (“virtual machines”) such as Linux, Windows, FreeBSD, etc. under a host operating system. This has the benefit that you can run multiple operating systems on the same hardware which saves a lot of money, and you can move virtual machines from one VMware Server to the next one (or to a system that has the VMware Player which is also free).
Continue Reading…Speeding up your hard drive
Get faster file transfer by using 32-bit transfers on your hard drive
Just add the line:
hdparm -c3 /dev/hdXto a bootup script.
If you use SuSE or other distros based on SYS V,
/sbin/init.d/boot.localshould work for you.
This enables 32-bit transfer on your hard drive. On some systems it can improve transfer performance by 75%.
To test your performance gain, type:
hdparm -t -T /dev/hdXAs we all know: Debian is rather conservative in introducing new versions of software packages which is fine it guarantees a stable well tested set of applications which makes Debian a perfect linux server platform. But if you want to protect your files or network against viruses you need the latest antivirus engines. The following procedure describes how you can upgrade the clamav anti virus package to a new version without switching to testing or unstable.
Continue Reading…Now that you are familiar with the most important search engines and linking strategies, you should not ignore other promotion tools that will enhance your website promotion efforts.
3. Traditional Media Strategies
Website promotion should be a mix of online and offline strategies. Traditional media tools apply successfully to increase traffic and get more visitors.
Promote your website URL on business cards, stationery and company documents.
Dont ignore the importance of the traditional media. Include your URL in any display in newspapers, magazines and so on. Many people do use the yellow and white pages to search for services. Make sure your company is listed and provide the URL along your listing as well.
Send your clients business greeting cards on proper occasions. These will act as reminders and help maintain good communication channels between you and your customers.
Use your local TV and Radio to promote your website. Advertisements on national TV are really expensive, but do use them if you have the money.
Print informational brochures and periodicals. For periodicals dont just ramble about a topic: make them worth reading. Send them free to business partners, clients, journalists and research centers.
Develop a free service (related to your business field) to attract clients to your website: a free online insurance calculator, a free e-book, free software, etc.
4. Email Strategies
Emails are virtual corporate letters. Email can be used to send out answers to inquiries, news, offers, advice and much more. The first and most important rule when it comes to business email is: DONT SPAM! The rest comes naturally.
No matter what business email you send out, always use a signature: your name, position, company address and phone numbers, website URL. Always include the http: in front of your domain name, as many email software programs fail to convert simple www. into links.
Publish an eNewsletter (ezine): this is a periodical electronic publication with useful information for your clients. You may include in the eNewsletter articles, press releases, news and special offers. But dont forget to include a visible link to your website as well.
Send your clients special offers, discount coupons, product updates and so on. These should be personalized, clear and to the point. Once again: dont spam.
There are email marketing companies that have developed lists of people who have agreed to receive commercial emails. You could use such a service, but if you do, make sure its not a type of pay to read email company. To pay for something like this will do you no good, as people who get paid to read emails dont really care about your message, but just click on the links to get a commission per click.
Up to now youve learned the importance of search engine strategies, how to develop a solid linking strategy, how the traditional media tools boost site popularity and what email strategies work best to promote your website. In the third and last part of this short guide, we will show you how to use paid advertising effectively. We will also take a look at some miscellaneous website promotion tools.
About The AuthorScott Lindsay is a web developer and entrepreneur. He is the founder of HighPowerSites and many other web projects. HighPowerSites is the easiest do-it-yourself website builder on the web. No programming or design skill required. Get your own website online in just 5 minutes with HighPowerSites.com
Continue Reading…Anonymous Proxies 101 by: Thomas Pitts
If you search in Google for anonymous proxy, you will get well over thirteen million hits. Anonymous proxy sites allow you to enter your URL into the site, and it will then retrieve and display the page for you. This helps to protect you anonymity on the Internet, because the target site logging the visit records the information of the anonymous proxy site, not the end user. Why are there such a growing number of sites that provide this service The answer is that various types of censorship exist to prevent access to many Internet resources. Censorship is an often ill-abused buzz-word. We are subject to censorship our entire lives. It comes in many forms. There is Moral, Military, and Religious censorship. Clearly there is a need to withhold certain information under certain circumstances, such as in wartime, or any time its immediate dissemination will cause harm to others. While military secrets are often the most fleeting of all, timing is everything. Its not really a matter of what you know about your enemy, but when you know it.
Continue Reading…Discover Mozilla FireFox Extensions and How To install them by: Finley Stew
If you are still not using any other web browser then FireFox (no matter what OS you are using) you are endangering the security of your computer and missing out on a much richer surfing experience. One of Mozilla FireFox browser most powerful feature is the possibility to install extensions. Since Firefox browser is a product of the open code community, this results in an active programming distribution of firefox extensions. The extensions are plugins that just like skins will add functionality to the firefox browser. The number of extensions is countless and any day more of them are being released. They go from telling the weather or controlling you favorite mp3 player from the browser to adding practical functionality to your special surfing needs, like better managing your downloads or designing web pages.
Continue Reading…Windows Vista – What To Look Foward To by: Richard Callaby
Perhaps you have heard about the next new version of Microsoft Windows, called Vista The Vista operating system has many promises to one great, stable and dynamic operating system. Not only will this operating system have the .Net framework built into the core of the operating system it will also feature some other key communications, user interface and security breakthroughs.
Continue Reading…A Guide To Website Promotion Part One by: Scott Lindsay
A great deal has been written about website promotion, yet many businesses fail in attaining visible results: increasing traffic, getting more clients and so on. Why Because many online entrepreneurs do not exploit the proper website promotion tools at their fullest.
Here is a list of website promotion strategies you need to consider if you want a successful online business.
Continue Reading…Why Do I Still Get Viruses by: Darren Miller
Viruses & Anti-Virus Software
Many people have Anti-Virus software installed. Many of the major Anti-Virus software company’s now promote what they call Security Suites or packages. These Security Suites contain everything from Anti-Virus, Firewall Protection, SPAM and Pop-Up blockers, and Ad-ware protection. Quite often, once the software is installed people find out that things they use to be able to do on the Internet are no longer possible. So what happens is portions or all of the software they purchased to protect their computer get disabled. The result, an ineffective software program that you paid good money for! Worst than that, most people have no idea exactly how the Anti-Virus portion of the package should be configured. Leaving it up to the default configuration to defend their computers. Most of the manuals that come with these software packages seem to be written for those who understand the intricate workings of computers along with every computer acronym ever invented!
Continue Reading…Trying to get CSS-based websites to look the same across all browsers can often be difficult. Many of the problems however lie with Internet Explorer implementing CSS commands differently to other, more standards compliant browsers. All is not lost, however, as many of the differences you see across browsers are caused by the same Internet Explorer CSS issues…
Continue Reading…The problem with CSS
Historically the main problem with using CSS has been lack of browser support. This is no longer the case as version 5 browsers, which all have good support for CSS, now account for over 99% of browsers in use.
Instead, the problem is that browsers can sometimes interpret CSS commands in different ways, causing developers to throw their arms up in the air and switch back to pixel-perfect table layouts. Fear not though, as you learn more about CSS you’ll gradually start to understand the different browser interpretations and realise that there aren’t really that many.
Continue Reading…10 Things You Should Do When Your Computer Freeze or Hang-Up by: Pinky Mcbanon
You are in the middle of doing your work, suddenly you realized your computer hang up. But the problem is, you have not saved your work! Dont panic! There is a solution for that! And you can surely save your file!
Heres how:
Continue Reading…| 5 Essential SEO Techniques by: Tan Kok Chuan |
Search Engine Optimization is becoming a more and more complicated area especially with the recent updates and data refresh done on the search engines’ index. However, the basic concept for good ranking does not change. The following illustrates five most important SEO techniques as summarized from the Google Webmaster Guidelines that all webmasters should follow.
Continue Reading…On FreeBSD 5.x it is possible to install IBM’s Tivoli Storage Manager by patching the Linux compatibility layer. On FreeBSD 6.x it has some issue’s (scheduler doesn’t work, but if scheduled via the crontab it works fine).
For the instructions how to install TSM and patch the Linux compatibility layer click here
Continue Reading…| cd /usr/src |
| make buildworld |
| make buildkernel KERNCONF=MYKERN |
| make installkernel KERNCONF=MYKERN |
| reboot |
| Reboot into single user mode |
| fsck -p |
| mount -u / |
| mount -a |
| cd /usr/src |
| adjkerntz -i |
| mergemaster -p |
| make installworld |
| mergemaster |
| exit |
Try this free web site speed test to improve website performance. Enter a URL below to calculate page size, composition, and download time. The script calculates the size of individual elements and sums up each type of web page component. Based on these page characteristics the script then offers advice on how to improve page load time.
Continue Reading…It is possible to integrate David Schweikert’s Mailgraph into Cacti. Please check the cacti forum which discribes how to integrate the mailgraph scripts into Cacti
Continue Reading…So I lost my root password for MySQL database. After digging around mysql.com docs (which are just as cryptic as man pages), and searching google, I finally was able to change my root password.
Continue Reading…I have an exchange server that doesn’t do a very good job of filtering spam. The server sits inside the firewall/NAT and is reached through port-forwarding. I wanted to stick a device in between the Exchange server and the firewall to filter spam, so I needed a device that would work as a bridge. Spamd works with the pf firewall to redirect smtp traffic that is passing through the bridge to the spamd process. Once a server’s IP address is added to the whitelist by spamd, traffic from that machine passes through the bridge unfiltered. Outbound SMTP traffic is also unfiltered. The users are unaffected because Microsoft Outlook doesn’t use SMTP to inject mail into the server, and so the only thing that should be talking to port 25 (SMTP) should be other mail servers.
Continue Reading…
