I want to disable the username in the GDM Login screen .
Step 1 . Logout of your current session and return to the GDM
Step 2. Switch to the tty command line prompt using Ctrl-Alt-F1
Step 3. Login using your normal login/password
Step 4. at the command line prompt type: export DISPLAY=:0.0
Step 5. then type: sudo -u gdm gconf-editor
Step [...]
How to install/uninstall .deb files?
To install .deb file
sudo dpkg -i package_file.deb
To uninstall .deb file
sudo dpkg -r package_name
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How to mount/unmount Image (ISO) files without burning?
1. To mount Image (ISO) file
sudo mkdir /media/iso
sudo modprobe loop
sudo mount file.iso /media/iso/ -t iso9660 -o loop
2. To unmount Image (ISO) file
sudo umount /media/iso/
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We need an addition command-line tool called qemu.
sudo aptitude install qemu
You’ll new be able to convert a .vmdk (VMware image) to a .bin format, which can then be converted to a Virtualbox native .vdi format.
qemu-img convert /path/to/original.vmdk converted.bin
You’ll then need to use the VBoxManage utility that comes with Virtualbox to convert the .bin to a native [...]