Android development with Eclipse: a trick

If you get an exception like

Unable to execute dex: Multiple dex files define…

when you are trying to run (or debug) an Android application, just restart Eclipse.

Online XPath Query tool

There is a simple XPath Query tool online at http://www.bit-101.com/xpath/. With this, you can test your XPath expressions quickly. Here is a screenshot of this tool:

Organize your photos

To get your photos organized by folder like:

it’s useful to use exiftool (http://www.sno.phy.queensu.ca/~phil/exiftool).

First, install it:

$ sudo apt-get install libimage-exiftool-perl

Then, use it:

$ cd /path/to/unorganized/photos/

$ exiftool “-Directory<DateTimeOriginal” -d “%Y_%m_%d” ./

Source: http://www.sno.phy.queensu.ca/~phil/exiftool/#filename