The OSTraining Blog - Web Design News and Tutorials

How to Change the Logo on Any Wordpress Theme

Perhaps the #1 most common question we get from beginners is: "How do I change the logo on a Wordpress theme?" This tutorial is the answer:

Step 1: Go and download the Firefox browser, if you haven't done so yet: http://www.mozilla.com/en-US/firefox/personal.html. Firefox is much better than Internet Explorer or Safari for working on websites.
Step 2: Start Firefox so that you're browing the web with it. We're now going to install an extra toolbar for Firefox. It is called the "Web Developer" toolbar. Visit this page: https://addons.mozilla.org/en-US/firefox/addon/60
Step 3: Click "Add to Firefox" and follow the instructions, including restarting Firefox.
Step 4: The next time you open Firefox, you will see a list of links that starts with "Disable", "Cookies", "CSS" and ends in "Options":

Step 5: Browse to the website where you want to change the logo. We're going to use http://wordpress.org for this example.
Step 6: In the toolbar, click on "Images" which is the 5th link from the left. Then click "View Image Information" from the dropdown.
Step 7: You will now see a list of all the images on the site.
Step 8: Scroll down until you see the logo. You will see two pieces of information about it: Location ( http://s.wordpress.org/style/images/wordpress-logo.png ) and Size ( Width = 301 pixels, Height = 52 pixels ).

Step 9: You need to make a new logo that is the same width and height as the old.
Step 10: Use your favorite file manager to upload the new logo to the location you found in Step 8. It is better to rename rather than delete the old logo. You could call it logo-backup.png for example.

How to Use Wireshark

A detailed look at the Wireshark protocol analyzer

Greetings, In this article I want to discuss the other powerful tool a systems administrator should know about. It is called Wireshark (from Wireshark.org). Wireshark is in essence a sniffer, in that it can listen in on the packets on the wire and tell you whats what. Officially its called a protocol analyzer which is more true to its mission. In this article I want to share with you a few items of value about Wireshark, and why you should get to know this tool better.

I think that as technical people we get lulled into a dull sense of safety with tools, for example a reliance on a control panel tool that identifies bad guys by their actions and blocks their IP's. This is for sure a good thing, but it is not the only thing. With tools like Wireshark, we can peer into the activity of our server and see what is going on at the packet level. A client some months ago came to JoomlaRescue.com and was having a problem with continually being hacked. We tracked it down to a compromised (vulnerable) FTP software that had allowed them in. However we found they were using FTP through the use of Wireshark.

This is important because if you were unfortunate enough to have a bad guy insert this INTO your network he could eavesdrop on everything you do. However - in this use case, it is being demonstrated as diagnostic tool.

For the purposes of this article I ran Wireshark on MY personal machine only. It was never allowed outside my network, so in other words, everything you see here came to my machine using normal, everyday browsing techniques.

How to Use NMap

In our previous articles, we discussed at a high level a few tools, the first of which was Nmap from insecure.org. In this article I want to give you a short primer on Nmap and some of the popular methods to use this powerful tool.

Using Acunetix and Nessus

Good Day to you!

In my last article, I introduced you to NMAP, WIRESHARK and NETCAT. These fall in the category of diagnostics and troubleshooting. The next two tools known as vulnerability scanners. They check your server, code and in the case of the second tool - Accunetix - it scans your "code" for such things as SQL Injection flaws and Cross site scripting.

Introducing Wireshark, NMap and Netcat

Good Day to you and welcome to Tools you need to know about.

This article is part one of the TOOL Series. In this I want to introduce you to some of my favorite tools. In the first few articles, I will discuss them generally, then in future articles, I'll spend time discussing each one.

The tools discussed will be both GPL and NON-GPL tools as well as Joomla based tools. Your comments are welcome and I hope that you find this series helpful.

How To Retrieve HTML Form Data With PHP

HTML form data can be retrieved and processed in many different ways, for example

by using a scripting language,
a server-side language such as PHP,
or any of the many programming languages of choice.

In this tutorial, we're going to walk you through on how to access or retrieve form data with PHP, and show you the different methods that can be used.

We Trust, Recommend and Use Hosting from Rochen

10 years is a long time in this business.

Since we started in 2006, we've dealt with a lot of people and a lot of companies. Business relationships have come and gone. Not many have endured for 10 years. Our relationship with Rochen is one of the few that has.

For the last 10 years, we've hosted all our sites at Rochen. This site is running on Rochen right now.

We use Rochen ourselves, and we recommend them to our customers. Over the last 10 years, we've experienced a lot of hosting companies. Though during these years we’ve occasionally recommended hosting companies, we stopped doing so because of the negative customer feedback we received. However, when we send people to Rochen, they come back happy.

Heading to DrupalCon Denver

Hey! DrupalCon Denver is almost here... and I'm leavin' on a jet plane! (yep - I'm old enough to remember that song)

This will be our 4th DrupalCon, and for the 3rd time Steve and I are teaching the "Absolute Beginner's Guide to Drupal" at a DrupalCon. The training is on Monday, but I'm afraid it sold out three times. We'll then enjoy the conference for the rest of the week with some of the geekiest people in the world! It's going to be a great week!

If you can't make it to Denver, check back often this week. If you're interested in Drupal, we'll be live blogging many of the sessions we attend including, of course, the keynote on Tuesday by Dries.

If you can make it to Denver, we'd love to meet you. Here's how to find us and get some great freebies.

Heading to DrupalCon Denver
(Dries keynote at DrupalCon London - August 2011)

In the Classroom at DrupalCon Denver

Thirty five people from all over the U.S. have joined us today to learn about Drupal in our training session at DrupalCon Denver! From government agencies to major universities and small businesses to non-profits are represented here today.

Closing Keynote for DrupalCon Denver 2012

We've had a great week at DrupalCon Denver and its just about over now.

I'm sitting in the theater waiting for the closing session where there's always a few surprises and some fun facts. This has been the a great DrupalCon. Mobile has been the central theme and the conference delivered. If you haven't read the post on this morning's keynote, click here and do so now. It was awesome!

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