Ever want to schedule a tweet to go out at the same time an article is published or an event is started? Want to do it without signing up to a service or some other complicated task? Well this post is for you. I am going to show you how to schedule a tweet from the command line in one line of code. You can schedule the tweet to take place ten minutes from now, 14 days, or whenever you wish. Read more »

Just recently I found a post that described using the ipseccmd in Windows. I honestly had no idea that this tool existed for Windows. I found this article while searching for a way to block outgoing traffic on the local computer as apposed to making firewall policies. This was the perfect solution for network testing, forcing productivity, optimization and security in Windows.

To get the firewall for Windows you will need to download, Windows Support Tools. When installing make sure you select the complete option. Read more »

If you have been following the posts on USPS you should know how to calculate USPS shipping rates with PHP. Today we are going to use the same USPS API to print out a label. One of the advantages of this is that you get free tracking on all priority shipments when you create your own label. The other advantages is that you get to integrate automatic label generation with your website for customers or for your own shipping.

Start off by making a file called, USPSLabel.php and copy and paste the code below and save it.

Then Change the userName variable with your USPS username and change the rest of the variables to match your label. Read more »

Let’s say you are working on an important email, document, or a critical website bug and your computer suddenly crashes and wont boot up. You have to get this work done right away what do you do? With a live CD you can be up and running in two minutes with the tools you need to finish the job. When you are done with your work you can use the live CD to actually fix your computer. Whether you are a computer techie or an average Joe, I think everyone should have a live CD next to their computer ready to go.

What is a Live CD?

 
A live cd is a temporary operating system that runs from a CD instead of a hard drive. This means that it doesn’t permanently effect your computer. When your computer is rebooted and the CD is ejected everything returns back to the way it was. Unless of course you want to use the Live CD to make changes to your computer, like fixing a computer that wont boot. Maybe you need to reinstall but you don’t want to loose those family pictures you saved. Maybe there is 4 minutes left on an Ebay auction and your computer wont boot. Read more »

Ever wonder how websites can tell you made a mistake entering your credit card number before you even submit it? Like most identification numbers credit cards have checksum digits built into them. Just like barcodes.

If you ever look at a EAN-13 UPC barcode (on all retail products) you will notice there is a digit outside of the regular set on the right. If any digit is out of order or mistyped you can tell that the barcode is wrong based on this checksum. It also allows barcode readers the ability to “guess” what the barcode if part of the barcode got riped or damaged. This is also how PAR files can repair corrupt damaged or even missing files. Read more »

Flash doesn’t come with Ubuntu by default so we need to install if for all of our browsers if we want to view any sites that have flash. Adobe provides an easy deb installation file to install it for browsers like Firefox but not Opera. Although the package from Adobe doesn’t automatically install flash for Opera, adding it manually is as simple as copying over a file.

Download the .deb file from Adobe and install it like you normally do. Read more »

SVN is one of those things that you love once you know what and how it works. SVN is a version control system used by almost all major open source projects and is an absolute dream to work with. If you have ever worked with a team of developers you probably have had the experience of having your code accidentally written over or deleted.

With SVN you have version control where you can revert changes, kinda like Wikipedia. It also keeps track of which files were actually modified and gives you an option to describe to other developers what changes were made. No more unfortunate mishaps.

What is great about SVN is that the code can be checked out to any server at any time with the latest code. I use SVN to make a “sandbox” server. A server that I can play around in without worrying about deleting code or messing something up. When I am happy with my changes I can type one command and the two servers are synced with the newest changes. If for some reason it doesn’t work out I can revert back to the old way in one easy command. Read more »

Well I just recently hooked up a DSL connection via a DSL modem that was also a router. For regular home users this DSL modem/router is probably good enough but for more complex setups it is useless. In this particular setup we had a custom built firewall. This firewall had a built in dynamic DNS service for ISP’s that rotate IP addresses. The problem however, is that the firewall was behind the DSL modem’s NAT. So it was reporting a private 192.168 number to Dyndns.

We couldn’t turn off NAT on the DSL modem unless we purchased a block of static IPs. The DSL modem, being home orientated, didn’t allow for dynamic DNS.

Fortunately dyndns offers a service to detect your public IP address. They also have an API to change your IP for dynamic DNS. Knowing this I quickly did a search on my favorite perl code repository, CPAN. Sure enough someone made a module that sends updated IP info to dyndns. Read more »