Although there are several ways to achieve this, the way I most often tar and gzip files using a single command line is as follows: […]
Firmware, UNIX/Linux
How to block ads on jailbroken iPhone/iPod Touch
If you have a jailbroken iPhone or iPod Touch, it is quite simple to block many advertisement sites from being displayed either in your Safari […]
UNIX/Linux
Mount an ISO image
In order to mount an ISO image in Linux, so that you can access its contents, use the following command. You may need to change […]
UNIX/Linux
Copy CD to ISO image
In order to copy a CD or DVD to an ISO image in Linux, use one of the following commands below: dd if=/dev/cdrom of=image.iso or: […]
Electronics, Firmware, Hacks
DD-WRT on a Linksys WRT54GS v7 router
At the time this is written (4-FEB-2008), the only 3rd party firmware that will work on a Linksys WRT54GS v7 router is the micro edition […]
Scripting, UNIX/Linux
Basics of UNIX shell scripts
With UNIX scripts you can do many powerful things. You won’t be able to take over the world with it, but it’s pretty close. Scripts […]
HTML, Java
Using Servlet filters in Java web applications
As of the Java Servlet specification version 2.3, a component type, called a filter, can be used in your Java web applications. A filter dynamically […]
Database, Oracle, SQL
Catching errors in Oracle
Sometimes there is a need to find out exactly which Oracle errors are occurring in your code, because your application stacktrace or your log files […]
HTML, Javascript, JSP
A complete AJAX example
There are several third party libraries that simplify the programming that is needed to make your web pages communicate with the server more dynamically, and […]
Java
Java Programming Tips
Tip #1 – Avoid NullPointerException situations When comparing strings against specific values in Java, you can easily avoid the java.lang.NullPointerException problem by specifying the string […]