Complete, Concrete, Concise

Practical information without the bloat

Web Tools

How to Edit .htaccess in cPanel

This tutorial is for users whose web hosting administration front end is cPanel version 11.34.1 (build 12). It may be the same or similar for other versions of cPanel or other web hosting administration front ends, but no guarantee is made. Sometimes it is necessary to edit the .htaccess file. By default, cPanel hides this […]

Blog

WordPress – Preliminary Impressions of Photon in JetPack

JetPack for WordPress now includes a feature called Photon: Photon works by using wordpress.com to cache and serve up images from your site. Since I am always looking for ways to reduce my bandwidth (and speed up performance), I enabled it. I have observed a reduction in the bandwidth: The 20th, 21st, and 22nd averaged […]

Web Tools

How to Backup a Database Using phpMyAdmin

This tutorial is for phpMyAdmin version 3.5.5. It is probably the same for other versions, but no guarantee is made. Note: the preferred method to backup a database is to use the backup database service provided by your web host. If your web host does not provide such services, then you can use this method […]

Blog

Understanding the differences between various Linux distro’s

There are many different operating systems (OS) out there. The most commonly known being Microsoft Windows and Mac OS, and then there is that OS called Linux that people keep talking about. It is not always clear what Linux is except that it is an operating system (sometimes claimed to be better than any other […]

C

Programming Error – Unintended String Concatenation

In an effort to be helpful, C and C++ compilers concatenate adjacent strings together. In the following example, the compiler will concatenate the two strings into a single string: printf("This is a string " "and this is another string."); Which is probably what you intended anyway. Because C and C++ are free form languages, adjacent […]

Web Tools

When Your Website Stops Working Properly, it may be a Corrupt Database

This tutorial is for people using a web host that uses the cPanel interface (version 11.34.1). Instructions may be the same for other versions or interfaces, but not guarantee is made. When we set up a website, we expect it to keep working. Maybe we have to apply periodic updates and patches, but, in general, […]

WordPress

All Your Content has Vanished / Error 404 on All Pages

These instructions are for WordPress 3.X that is being hosted on a web server that provides access via cPanel version 11.34.1. The instructions may be the same or similar for other version combinations or interfaces other than cPanel, but no guarantees are made. Possible Symptoms You may encounter one or more of the following symptoms: […]

Ubuntu 12.04

How to Run a Shell / Command Line / Terminal with root Privilege / Access

This tutorial is for Ubuntu 12.04. It should be the same for other versions of Ubuntu and (probably) most other Linux distributions, but no guarantee is made./p> Detailed instructions for opening a command line / terminal can be found here. When you open a terminal in Ubuntu, you do not have administrative privileges. This means […]

Ubuntu 12.04

How to Change the Timeout Period for sudo

This tutorial is for Ubuntu 12.04. It should be the same for other versions of Ubuntu and (probably) most other Linux distributions, but no guarantee is made. Detailed instructions for opening a command line / terminal can be found here. By default, sudo temporarily grants administrative privileges for 15 minutes. This means the first time […]

Mathematics

Understanding the Law of Sines

While trigonometry is used to solve problems involving right angle triangles, it can also be applied to triangles that are not right angle triangles. Assumes you understand basic trigonometric concepts. A tutorial on understanding sine, cosine and tangent can be found here. A tutorial on understanding the trigonometric functions and the unit circle can be […]

Ubuntu 12.04

Command Line Basics: Editing Files

This tutorial is for Ubuntu 12.04. It should be the same for other versions of Ubuntu and (probably) most other Linux distributions, but no guarantee is made. Detailed instructions for opening a command line / terminal can be found here. When you work at the command line, from time to time, it may be necessary […]

Mathematics

Understanding Basic Trigonometric Identities

This tutorial assumes you are familiar with the trigonometric functions and their derivation from the unit circle. A tutorial on the trigonometric functions can be found here. A tutorial on the trigonometric functions and the unit circle can be found here. What is an Identity? An identity (in mathematics) is something that is true (more […]