Remove / hide GRUB Boot Menu when booting linux

If you have just one operating systems installed sometimes you do not need to have a grub menu to be displayed when linux boots.
To do that edit /boot/grub/menu.lst file and add / uncomment line:
hiddenmenu
if you would like to remove countdown as well edit line with timeout to 0.
Once you have made changes you need [...]

Convert virtual machine from vmware.vmdk to virtualbox.vdi

Easiest way to convert virtual machine from vmware.vmdk to virtualbox.vdi is to use these two tools: qemu and vditool
Navigate to you vmware machine which you would like to convert. Then run following command:
qemu-img convert -f vmdk vmware.vmdk -O raw virtualbox.bin
then you need to download vditool from:
http://www.virtualbox.org/download/testcase/vditool
make vditool executable:

chmod +x vditool
Use vditool to convert virtual images:
./vditool [...]

vditool: error while loading shared libraries: libstdc++.so.5

I have recently run into a problem when I was trying to convert vmware virtual machine to virtualbox using vditool. Apparently having the latest software is not always good idea. vditool is complaining that it is missing libstdc++.so.5 library. I have only installed libstdc++.so.6 which is there by default. libstdc++.so.5 belongs to gcc-3.3-base compiler.
Here is [...]