Verify an Email Address

Sometimes it is nice to verify whether an email address actually exists:

Ubuntu: Transfer

Sometimes when installing a new Ubuntu system it is nice to know, which packages you actively installed on an old Ubuntu system.

Batch Convert Images with ImageMagick

This can easily be done using the following command line, that creates a PNG file for each of the JPG files. [code]mogrify -format png *.jpg[/code]