I work in Linux primarily but run a Windows 7 virtual machine in VirtualBox so I can use Photoshop and do some necessary testing. Today my VM ran out of space. Silly me thought 20GB would be enough, but after installing service pack 1, dozens of Windows updates and a few programs I had less than 1GB of space left. After a little searching I found an easy way to increase the size of a virtual disk.
I was just in a bit of a pickle and needed to join two .avi files together while in Ubuntu. There are a number of solutions out there, but the most simple solution I could find was via avimerge. Here's how I did it.