Archive for the ‘Linux’ Category

Reinstall Grub 2 after installing Windows 7 or reinstalling Windows Bootmanager (MBR)

An easy way is to use a Ubuntu livecd.

  • Boot Ubuntu 11.10 with the livecd
  • Start the disk utility with the command palimpsest to find the partition where Ubuntu was installed to. On my hard disk it was /dev/sda5.

  • Use your partition number instead of the 5…:
sudo -i
mount /dev/sda5 /mnt
grub-install --root-directory=/mnt/ /dev/sda
  • restart
Categories: Linux, Ubuntu, Windows 7

Install Gnome on Ubuntu 11.10 server

November 27, 2011 3 comments

To install Gnome on your Ubuntu 11.10 server you should have defined the following repositories in /etc/apt/sources.list:

deb oneiric main restricted universe multiverse
#deb-src oneiric main restricted universe multiverse

deb oneiric-updates main restricted universe multiverse
#deb-src oneiric-updates main restricted universe multiverse

deb oneiric-security main restricted universe multiverse
#deb-src oneiric-security main restricted universe multiverse

If you have them in your sources file, install gnome shell with the command:

sudo apt-get update
sudo apt-get install gnome-shell
sudo apt-get install gdm

To start the Gnome shell use:

sudo gdm
Categories: Linux, Ubuntu

Gnome-shell Shutdown/Restart Button

  • Click on the user account at top-right corner.
  • Press down Alt key. You’ll see the “Power Off…” option.
Categories: Linux, Ubuntu

How To Upgrade To Ubuntu 11.04 Natty Narwhal via Linux Terminal

To upgrade to the Ubuntu release Natty Narwhal (11.04) just type the following command in a Terminal:


Be shure to have enougth space in your hard drive. I had to free 2,8 GB for the new packages and upgraded from 10.10.

Categories: Linux, Ubuntu

Firefox 4 for Ubuntu 10.04 and 10.10

sudo add-apt-repository ppa:mozillateam/firefox-stable
sudo apt-get update
sudo apt-get upgrade

Categories: Ubuntu

How to convert CHM files into PDF files

There is a Python script called chm2dpf that converts CHM files into PDF files. To install it in Ubuntu use the follwing command:

sudo aptitude install chm2pdf

Using chm2pdf to convert a chm book:

chm2pdf --book my-file.chm my-file.pdf

Categories: Misc, Ubuntu

Proxy support for apt-get package management

Define the http_proxy variable in the format http://host:port/. If you have to login then use the format http://username:password@host:port/. To define this variable add the following lines to the root login file /root/.bashrc.

export http_proxy

To use the proxy only user specific define the variables in the file ~/.bash_profile or ~/.profile. If the file ~/.bash_profile exists the file ~/.profile will ignored by the Bash (Standard-Shell). The settings in ~/.bashrc overwrite ~/.profile, too.

To use changes of the file ~/.profile without a restart you can use the following command:

source ~/.profile
Categories: Linux, Ubuntu

NVIDIA screen settings

Settings are saved in /etc/X11/xorg.conf and can be changed with

sudo nvidia-settings

The configuration file for nvidia-settings is ~/.nvidia-settings-rc and can be updated with

sudo nvidia-settings -r, --rewrite

With Intrepid Ibex and above the screen resulotion is not saved in xorg.conf but rather in the file ~/.config/monitors.xml.

Categories: Linux, Ubuntu

Name of graphic card

lspci | grep -i vga

Categories: Linux, Shell, Ubuntu

Assign a root password

To be able to log in as root directly, you must assign a root password. This can be done with:

sudo passwd root

Afterwards, you can use

Categories: Linux, Shell, Ubuntu