Ertan Deniz

I was migrating my VMs from VirtualBox to VMware, and I needed to uninstall VirtualBox Guest Additions from a Ubuntu guest. The system path did not have a VirtualBox uninstall tool, but a short search on Google showed the following: /opt/<VirtualBoxGuestAdditionsFolder>/uninstall.sh

I was asking myself, "What will happen if my laptop is stolen?". I usually store private data both on my work and home laptops. So I was in the market for a solution to protect my private data. I know that most operating systems have the ability to encrypt entire drives, but what I wanted was a cross platform solution, which would allow me to access the same data from different computers with different operating systems. I would also like to easily backup my encrypted data, either on an external drive or a cloud environment. TrueCrypt , an open source and free project, gives me all the features that I want. I was really surprised at how mature the product is. I have successfully and easily used it on my Windows 7 work laptop, Ubuntu 11.10 home laptop and Mac Os X desktop at home. There's not yet a mobile version (Android, IOS etc), but it sure would be a welcome product. Main Features as described on the TrueCrypt official website: Creates a virtual encrypted disk...

I had an Ubuntu 11.10 VirtualBox instance which I needed to access just by SSH, so I investigated how to easily disable lightdm (the service that starts up X, the graphical user interface) from running at boot. Seems like it's pretty easy do disable an upstart service in Ubuntu. Just create an override file and lightdm won't start at boot: sudo echo "manual" >> /etc/init/lightdm.override To start lightdm when you need it: sudo start lightdm To restore your system so that lightdm is always started on boot: sudo rm /etc/init/lightdm.override