Tag Archives: server

October, 2009

• 16 October

  What is a cgi-bin directory?

  Question: What is the purpose of a cgi-bin directory? Answer: CGI programs running on a server must be executable. While this allows the user to run server-side scripts, including convenient free ones found on the web, it also presents a security risk. Most virtual hosting situations restrict execution of Perl …
• 15 October

  PHP Memory Limit

  Question: My PHP content management program “X” needs more RAM. How do I fix this? Answer: Depending on your server setup and whether you have shared hosting or a dedicated server, you may or may not be able to change the allowed PHP memory usage. What happens is that PHP …
• 15 October

  Which Programs Are Using Ports?

  Question: How do I find out what Linux programs are using my ports? Answer: Running a Linux dedicated server can be a big responsibility, so it is good to know shortcuts for some of the more sticky situations that arise. If you ever have a situation where you cannot start …
• 13 October

  The Mysterious User Named Nobody

  Question: Who is “nobody”, and why is he running so many programs on my server? Am I being hacked? Answer: On a Linux-based dedicated server, every application must be run by a particular user. On a desktop system, programs are usually either run by the local user or the system. …
• 8 October

  Common Server Port Numbers

  Question: What are some common port numbers used in web hosting? Answer: Most firewalls come configured with the essential port numbers open and the rest of them closed. Nevertheless, it is still important to know which ports do what, whether you are running a dedicated server or just one shared …
• 7 October

  Common Apache Error Codes

  Whether you are running a dedicated server, a reseller business, or just a shared hosting website, you will undoubtedly encounter a few errors now and then. Knowing what each error code means can go a long way. Below are some common Apache web server error codes: 404 Not Found This …
• 6 October

  What is root and su?

  Question: What is root and su? Answer: On Linux and other Unix-like systems, root is the default username of the system administrator or super user (su). Typically, the root user is the only one that has complete read and write access on every file located on a server. Shared hosting …
• 5 October

  Should I setup my own dedicated servers or use the cloud?

  Question: Should I setup my own dedicated servers or use the cloud? Answer: The tech world is currently abuzz with positive, negative, and neutral news about cloud computing. Some small to medium sized businesses have successfully transitioned to it and are perfectly happy. Others are sticking with traditional dedicated hosting, …
• 5 October

  What are Xen, Vmware, and Hyper-V?

  Question: What are Xen, Vmware, and Hyper-V? Answer: All three are popular virtualization software. Xen is a free and open source virtualization solution and is therefore included in some Linux distributions. Vmware is a commercial company with many virtualization products. Hyper-V, formerly known as Windows Server Virtualization, is a commercial …

September, 2009

• 28 September

  HTML, XHTML, and CSS

  When stepping into the world of web hosting, you will be inundated with abbreviations, acronyms, and recursive acronyms. Three that you should definitely know are: HTML, XHTML, and CSS. HTML is as old as the Web itself. It stands for Hyper Text Markup Language. It is the primary language of …