How to make Your Ubuntu Linux Enegy Efficient using PowerTop

Since version 2.6.21, the Linux kernel has introduced a   feature called tickless. the kernel no longer has a fixed 1000Hz timer tick. This will give a dramatic  power savings because the CPU stays in low power mode for longer periods of time during system idle.

A Nice handy tool, PowerTop has been created for reducing the Power Usage of Linux.  This application will help to find  the software components that are preventing optimal usage of your hardware and give proper  suggestions for both hardware and software configurations to reduce power consumption of your system. So Now Your Ubuntu is energy Efficient.It is very useful for Laptop Users.

How To Install PowerTop in Ubuntu

Open a terminal and type the following

$ sudo apt-get install powertop

Or You can use Synaptic Package manager and select package powertop.

How to Access / Install Device Manager in Ubuntu 9.10 Karmic koala

         

         There is not an  application like Windows Device Manager Ubuntu. Gnome-Device-Manager is the Ubuntu equivalent for the Windows Device Manager application. it's not installed by default. Gnome Device Manager is a front-end, or GUI, to the HAL daemon service. HAL continuously polls the system message flow or "desktop bus," which is also known as "D-Bus.", D-Bus listen for messages about hardware events from the Linux kernel. Example , that a pendrive has been inserted.

How to Install Device Manager in Ubuntu


Open a Terminal andt type

$sudo apt-get install gnome-device-manager

or use synaptic package manager


Using Device Manager in Ubuntu

Gnome Device Manager is started by selecting
Applications → System Tools → Device Manager.

How to Install Firefix 3.6 (Namoraka) in Ubuntu 9.10 (Karmic Koala )

The Latest Version of Firefox is now available in launchpad. For Installing Firefox 3.6 in your machine, do the following steps
First  Add the ppa to ubuntu repository,   Then Add the GPG Key, update and install

Open a terminal and type the following

$ sudo sh -c "echo 'deb http://ppa.launchpad.net/ubuntu-mozilla-daily/ppa/ubuntu karmic main' /etc/apt/sources.list"

$ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 247510BE

$sudo apt-get update

$sudo apt-get install firefox-3.6


Now You can Start  firefox 3.6
Go to Applications --> Internet--> Namoroka Web Browser

Howto use Windows Shared HP printer in Ubuntu / Debian Linux (using samba)

Most of the Computer Labs in Industry and Education Institutions are equipped with Windows. So Printers are also connected to Windows machines. Here a Simple howto for sharing windows shared printers for Linux users. I have test with a HP1015 printer installed in an Windows XP machine and shared. My linux box is ubuntu 9.04 ( I also tested with ubuntu 8.04, 8.10 , debian 4.0 and 5.0).

First install samba

apt-get install samba

apt-get install smbfs

apt-get install cupsys

after this installations

open a browser and type

http://localhost:631/

you will get a cups administration page

select add printer

then type Name : anything
Location : anything
description : anything

now you will get a dropdown menu

select windows printer via samba

now there is text box Device URI

type smb://shibuscomputer/1015 ( see I have a shared hp 1015 printer at computer name called shibuscomupter and share name of printer is 1015 with permision to all)

after selecting uri u will get a page for selecting make

select your printer make in my case it is HP

next page select model HP Laserjet series PCL 4/5 CUPS v 1.2 (en)

now printer installation is over

you can make a test print now

Howto setup Second IP address or Virtual IP address to your Networkcard in ubuntu

If you are a Network Administrator some time you need to assign more than ONE ip address (second ipaddress) to your network card of Ubuntu machine. For this you need to edit the /etc/network/interfaces file by adding the following lines . See the example below and make change according to your ip address settings

#vi /etc/network/interfaces

auto eth0
iface eth0 inet static
address 192.168.0.5
netmask 255.255.255.0
network x.x.x.x
broadcast x.x.x.x
gateway x.x.x.x

auto eth0:1
iface eth0:1 inet static
address 192.168.0.50
netmask 255.255.255.0
network x.x.x.x
broadcast x.x.x.x
gateway x.x.x.x

after entering the values save this file and you need to restart networking services in ubuntu using the following command to take effect of our new ipaddress.

After entering all the details you need to restart networking services using the following command

#/etc/init.d/networking restart

How to Share Files quickly in Ubuntu / Debian Linux

In the very first day of my python study, I wondered!!!
Some time we need to share files to other systems in our computer center quickly with out any tools in hand. If you have a python installation in your system, file sharing is very simple by implementing a little http server, using a single line command.

Suppose If you want to share the folder /home/shibu/ and my IP address is 192.168.0.4

open a terminal then type following
$ cd /home/shibu

$ python -m SimpleHTTPServer

Now your http server will start in port 8000
( You will get a message - Serving HTTP on 0.0.0.0 port 8000 ... )

Now you can open a browser in the remote machine and type the following in the address bar

http://192.168.0.4:8000

If you are a network administrator it is very useful, normal users can also use this trick.

you can test it locally by using
http://127.0.0.1:8000