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Tutorials
SQL: Union and Union All
Submitted by Webmaster on Friday September 25, 2009
UNION is used to combine the result from multiple SELECT statements into a single result set. By default, when it is applied to more than one queries, returns unique result sets only. UNION ALL on the other hand returns all rows in the result sets...(Read more)
Category:
Database Management Systems > MySQL > Tips and Tricks
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Microsoft Windows IIS FTP Part 3 - The Doorway Folder Trick
Submitted by Sarbjit Singh on Friday February 06, 2009
Objective: To create a customized login with access to some of the folders in a site. In the previous two parts we learned how to leverage virtual directories and physical folders to offer a lot of control from IIS FTP. Now, what about when we want to have one site administrator have access to more than one, but not all, of the directories in a site? How is this accomplished from within IIS FTP? Note: For the purpose of this discussion, "Folder" and "Directory" are same thing . So let us call "Folder" when referring to something at the disk level, and "Directory" when referring to something within IIS...(Read more)
Category:
Servers > Internet Information Services > Administration
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Microsoft Windows IIS FTP Part 2 - Directories Virtual/Physical
Submitted by Sarbjit Singh on Friday February 06, 2009
In previous section, we discussed the ways to use the hidden power of Microsoft's FTP server product. We talked about ways to leverage virtual directories along with Windows user accounts...(Read more)
Category:
Servers > Internet Information Services > Administration
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Linux kernel data structures (Part 1) - the current macro
Submitted by Shahryar on Thursday January 29, 2009
The Linux kernel uses this macro to find the current process. The current macro is defined in include/asm-i386/current.h (line 13) in both 2.6.0 and 2.4.18 kernels. This macro calls another function get_current()...(Read more)
Category:
Operating Systems > Linux > Tips and Tricks
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Some Tricks used by the Linux kernel
Submitted by Shahryar on Thursday January 29, 2009
Linux kernel uses a number of advanced keywords, macros, and extensions to C language. Here is a description of some of these keywords, macros and extensions that I found troublesome to understand and had to investigate a little bit in order to understand them. I have used kernel versions 2.4.18 or 2.6.0 for this tutorial...(Read more)
Category:
Operating Systems > Linux > Tips and Tricks
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Windows PowerShell command line shell execution policies
Submitted by Shahryar on Wednesday January 28, 2009
Microsoft Windows PowerShell command line shell and scripting language helps IT professionals achieve greater control and productivity. Using a new admin-focused scripting language, more than 130 standard command line tools, and consistent syntax and utilities, Windows PowerShell allows IT professionals to more easily control system administration and accelerate automation...(Read more)
Category:
Operating Systems > MS Windows > Administration
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How to set permissions to run PowerShell Scripts?
Submitted by Shahryar on Wednesday January 28, 2009
Microsoft Windows PowerShell command line shell and scripting language helps IT professionals achieve greater control and productivity. Using a new admin-focused scripting language, more than 130 standard command line tools, and consistent syntax and utilities, Windows PowerShell allows IT professionals to more easily control system administration and accelerate automation...(Read more)
Category:
Operating Systems > MS Windows > Administration
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PHP Useful functions (Part 2) - The currentURL function
Submitted by Shahryar on Wednesday January 28, 2009
Developing websites, social applications, and scripts in PHP for more than 6 years now, I found a number of utility functions helpful in development. I am going to write a series of tutorials writing such functions and describing their use. Using these functions I have created a library of dynamically loadable classes but you are free to use them as you wish. I am going to discuss the currentURL function in this tutorial...(Read more)
Category:
Web Development > PHP > Resources
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PHP Useful functions (Part 1) - The inRange function
Submitted by Shahryar on Wednesday January 28, 2009
Developing websites, social applications, and scripts in PHP for more than 6 years now, I found a number of utility functions helpful in development. I am going to write a series of tutorials writing such functions and describing their use. Using these functions I have created a library of dynamically loadable classes but you are free to use them as you wish...(Read more)
Category:
Web Development > PHP > Resources
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MS Windows IIS FTP-Part 1- Managing Users
Submitted by Sarbjit Singh on Wednesday January 28, 2009
To be specific FTP is File Transfer Protocol and is around for over 30 years. FTP is the simplest and most secure way to exchange files over the Internet. Whether you know it or not, you most likely use FTP all the time. When downloading a file from the Internet you're actually transferring the file to your computer from another computer over the Internet. This is why the T (transfer) is in FTP. You may not know where the computer is that the file is coming from but you most likely know it's URL or Internet address...(Read more)
Category:
Servers > Internet Information Services > Administration
