Recently I was wondering if it would be possible to automate mouse and keyboard actions. The answer is obviously yes as you can use xautomation and xdotool tools. I will describe them in a couple of simple examples.
The easiest way to remove comments from a shell script is to use sed (stream editor for filtering and transforming text) command.
Quick Response Codes are appearing everywhere. You can see them in museums, near the tourist attractions or all over the web. There is no doubt that QR Codes are useful as they can contain any information within reasonable limits.
To use a physical hard disk in VirtualBox you need to create an image that will represent it.