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Why ubuntu on Dell notebook

sahab — Fri, 11 Jun 2010 05:13:34 +0000

First and foremost, Ubuntu is an Operating System. Just like Microsoft^® Windows^® or Apple MacOS, you can use Ubuntu to surf the web, check email, or just about anything you might want to do. Here’s a “Top Ten” list of things you should know about Ubuntu.

10) Ubuntu is simple and elegant

If you’re the kind of person who likes your computer to simply work, Ubuntu is right for you. It’s based on stable, secure, easy-to-use software that’s been around for a long time.

9) Ubuntu is designed for the Internet

Do you spend most of your time on the Internet? Ubuntu connects you to the Internet in seconds. Firefox is a very popular browser and works well with practically every website you’ll run across, e.g. news sites, social media sites, etc. It also works great with web-based e-mail sites like Yahoo or Gmail.

Ubuntu is “social from the start”

The people who make Ubuntu designed it to be very social-media centric. Do you use Facebook, Twitter, MySpace, or any of the other dozens of popular social networking sites? Ubuntu 9.10 works very well with these websites. And beginning with Ubuntu 10.04, these websites will be integrated into the Ubuntu OS itself for your convenience.

7) Ubuntu plays videos, songs, and movies easily

Do you like to watch videos on YouTube, buy songs from Amazon, pop in DVD’s from the local video store? No problem! Dell bundles a multimedia player with Ubuntu to deliver a great entertainment experience.(DRM protected music not supported.)

6) Ubuntu is safer than Microsoft^® Windows^®

The vast majority of viruses and spyware written by hackers are not designed to target and attack Linux.

For more info Dell opensource

BBC iPlayer installation on ubuntu

sahab — Wed, 02 Jun 2010 07:10:20 +0000

BBC iPlayer provides replays and downloads of BBC programs to UK residents. The BBC, however, has crippled its streams to prevent downloading and legal actions against iPlayer appear to be in progress. (RTMPDump methods may be required for stream recording). To install a Flash 64-bit edition of iPlayer:



sudo aptitude remove flashplugin-installer
sudo add-apt-repository ppa:sevenmachines/flash
sudo aptitude update
sudo aptitude install flashplugin64-installer

FireFox addons MediaPlayerConnectivity This allows you to configure RealPlayer as the default player for
BBC iPlayer radio.

How to set time zone in CLI mode in ubuntu server

sahab — Mon, 31 May 2010 10:14:00 +0000

Enter the below command for change the time zone in ubuntu server

#sudo dpkg-reconfigure tzdata

Then follow the screen instructions

Mysql DB Backup and Restore How to

sahab — Mon, 31 May 2010 09:57:23 +0000

Database Backup

If you’re storing anything in MySQL databases that you do not want to lose, it is very important to make regular backups of your data to protect it from loss. It is also a good idea to create a backup before making any major changes, incase something goes wrong and you need to revert to the unmodified version. Database backups can also be used to transfer your database from one server to another if you change web hosts.

Command Line (using mysqldump)

# mysqldump -u user_name -p your_password database_name > File_name.sql

Eg:
Let’s assume that:
Username: ubuntu
Password: jaunty
Database Name: ubuntulinux

# mysqldump -u ubuntu -p jaunty ubuntulinx> ubuntulinux.sql

This will backup the database to a file called ubuntulinux.sql

Back up more than one database

In this case you can use the –database option followed by the list of databases you would like to backup. Each database name has to be separated by space.

#mysqldump -u root -p –databases ubuntu ubuntulinux > data_backup.sql

Backup all Database

Back up all the databases in the server at one time you should use the –all-databases option. It tells MySQL to dump all the databases it has in storage.

#mysqldump -u root -p –all-databases > all_backup.sql

Database Backup From the phpMyAdmin

1. Login to phpMyAdmin
2. Click on your database name
3. Click on the tab labeled EXPORT
4. Select all tables you want to backup (usually all)
5. Default settings usually work, just make sure SQL is checked
6. Check the SAVE FILE AS box
7. Hit GO

Database Restore

Restore Database From the Command Prompt

If you are moving your data to a new server, or you have removed the old database completely you can restore it using the code below. This will only work if the database does not already exist:

#mysql – u user_name -p your_password database_name < file_name.sql

Or using our previous example

#mysql – u ubuntu -p jaunty ubuntulinux < ubuntuBackup.sql

If your database already exists and you are just restoring it, try this line instead:

#mysqlimport -u user_name -p your_password database_name file_name.sql

Or using our example again:

#mysqlimport -u ubuntu -p jaunty ubuntulinux ubuntuBackup.sql

Restore Database From the phpMyAdmin

Login to phpMyAdmin
Click on the tab labeled SQL
Unclick the ‘show query here again’ box
Choose your backup file
Hit GO

Installing Ubuntu Packages without Internet

sahab — Sun, 30 May 2010 06:35:51 +0000

Introduction

In ubuntu one of the biggest problem which people face is installing Softwares/Packages without a working internet connection. Ubuntu’s default installation is very minimal and tries to be a zero-bloat distro.

Before getting started, you need to download all the packages on a computer running Linux. Even a system running in Live environment would suffice, but it would need around 1GB of RAM to accomplish it’s work properly.

Download the packages

The package installation work is actually a 2-step process. First, packages are downloaded and cached in /var/cache/apt/archives folder. Second, they are installed from this archived copy.

You can run a LiveCD of Ubuntu on that system or use it from inside an installed system. Consider the two options.

Live environment

Boot from LiveCD, fire up the package manager, select the packages you want to download and Hit Apply. Packages would be downloaded and installed too. Don’t worry, if they are installed(its temporary session).

From an installed system

If you are at your friend’s place, then instead of downloading and installing the packages, you would prefer to just download the required ones. For this follow the steps.

Open Package Manager
Select the packages to be downloaded
Hit Apply
It would ask “Apply the following changes”.
Select the “Download Packages Only” checkbox.
Click Apply and all the packages are only downloaded to the archive folder

Create the ISO

Next download and install the package “aptoncd“.
Open it, select Create.
APTonCD would search its local cached copy and list you down the package available.
Click on Burn
Choose the type of Medium,Destination of the image and filename of the iso.
Click on Apply.
After ISO has been made, it would ask you to Burn it to a CD. If you want to burn it, you are welcome, or you can even carry the ISO in your pen/flash drive.
If you don’t burnt the CD, then please copy the aptoncd.deb file from /var/cache/apt/archives to your pen drive along with that ISO.

Installing on your computer

Now we assume two situations,

one is that you have burnt the ISO to a CD
another is that you have copied the created ISO and the aptoncd.deb file to your flash drive.

From CD

Just put the CD in your drive, a new popup would show up notifying you that a CD with offline repository has been detected. Do you want to import it? Accept it to import the package index.

From APTonCD ISO

Install the aptoncd.deb file from your flash drive by double clicking on it.
After installation, open APTonCD from System> Administration> APTonCD
select Restore
Select the ISO which is to be restored
It would show you the list of packages which will be restored
Click Restore and everything would be restored, packages are copied back and the index is also imported

Installing Imported Packages

You just need to open the Package Manager and search for the packages which you need to install. Select it and Click Apply. All done.

If you want to install all the packages from the ISO , search for a metapackage and install it

Ubuntu 7.10 Step by Step Installation

sahab — Sat, 29 May 2010 16:27:37 +0000

Step 1 - Download the Ubuntu 7.10 Desktop ISO image, as per your your hardware architecture (i386 or amd64), from here

Step 2 – Burn the ISO image .

Step 3 - Insert or leave the CD in your CD/DVD-ROM device and reboot your computer. Hit enter when the boot screen appears and wait for it to load into memory.

Step 4 – When the desktop is fully loaded, double click the Install icon and follow the installer steps:

Select your language

This is the first step of the installer, where you must select your native language (default is English). This language will be used for the installer and it will also be the default language for your Ubuntu Linux (when the installation is over). Click the Forward button after you have selected your language.

The second screen will feature a map of the Earth with little red dots, so you can select your city and country. Upon the current selection of your location, the time for the final system will adjust accordingly. You can also select your current location from the drop down list situated at the bottom of the window (recommended). Click the Forward button after you have selected your location.

Select your keyboard layout
On the third screen, you will be asked to select the keyboard layout that suits you best (default is U.S. English). You can also test your keyboard on the little text input field situated at the bottom of the window. Click the Forward button when you have finished with the keyboard configuration.

Hard disk partitioning

The hard disk partitioning is an easy task, Please select the option very careful when ever you have more than one operating system. You have three options:

1. If you want to keep your existing operating system, select the first option: “Guided – resize the partition and use the freed space”.
2. If you want to delete your existing operating system, select the second option: “Guided – use entire disk”.
3. Manual is the third choice at this point and I strongly suggest you to use it ONLY if you are an expert on Linux partitioning.

Once you’ve reached a decision, click the Forward button.

Migrate Docs From Existing OS

This is the best part of the installer, as it will allow you to choose your existing Firefox bookmarks, wallpapers, favourites, mail, Messenger contacts. If you don’t have a Windows or other Ubuntu installation on your hard disk, then you will not see this screen so just click the Forward button to continue with the installation.

Who are you?

Here you must do exactly what the title of this step tells you to do. You must fill in some fields with your real name, the name you want to use to log in on your Ubuntu OS and the name of the computer (automatically generated). Once you have finished with this step, click the Forward button again (for the last time).

Finally Ready To Install

If you have successfully arrived at this point, then you are definitely ready for your new Ubuntu operating system. So, what are you waiting for? Click the Install button NOW!

Then we have to wait for Ubuntu 7.10 (Gusty Gibbon) operating system installation step

Step 5 – After approximately 8 minutes, a pop-up window will appear with two options:

1. Continue using the live CD
2. Restart now

Then Click “Restart now” button, For access the Ubuntu operatig System. Enjoy and Feel the Difference.

Click here For Trouble Shooting the OS Installation Issue

How to Connect a Dial Up Modem in Ubuntu jaunty

sahab — Sat, 29 May 2010 05:49:56 +0000

I have installed a few dial-up modems in Ubuntu 8 and I prefer the external modems because they are usually easier to configure compared to internal Winmodems. But recently I ran into problems while installing a US Robotics 56K USB Modem Model 5637 in Ubuntu 9.04. The connection fails because of missing access permissions. Here is how I worked it out.

Detecting the Modem

First, I installed gnome-ppp because it provides better control of thedial-up connection:

sudo apt-get install gnome-ppp

from a terminal window or through Synaptic Package Manager. This installsautomatically wvdial as the underlying program.
Connect the modem and detect the modem using:

sudo cp -vp /etc/wvdial.conf /etc/wvdial.conf.bak091209 (to save the original version)

sudo wvdialconf

if the modem is detected save this configuration:

sudo cp -vp /etc/wvdial.conf /etc/wvdial.conf.bak091209

Otherwise make sure the modem driver as identified by scanModem is loaded:

sudo modprobe cdc_acm

Check using

ls -l /dev/tty*

The modem should appear as /dev/ttyACM0

Amanda Backup Using Virtual Tape on Ubuntu

sahab — Fri, 28 May 2010 08:23:40 +0000

Amanda Backup Using Virtual Tape on Ubuntu 7.10

Amanda:

AMANDA, the Advanced Maryland Automatic Network Disk Archiver, is a backup system that allows the administrator to set up a single master backup server to back up multiple hosts over network to tape drives/changers or disks or optical media. Amanda uses native dump and/or GNU tar facilities and can back up a large number of workstations running multiple versions of Unix.

This will guide you through setting up virtual tapes (utilize hard disk space for backups)

Install and Modify the xinetd

Create an amanda xinetd entry

If you haven’t already installed xinetd, install it

sudo apt-get install xinetd

Create an amanda xinetd entry
Code:

sudo vim /etc/xinetd.d/amanda

Give it the following contents
Code:

# default: on
# description: The amanda service
service amanda
{
only_from            = ubunutlinux.co.in
disable                  = no
socket_type         = dgram
protocol                = udp
wait                        = yes
user                        = backup
group                     = backup
groups                   = yes
server                     = /usr/lib/amanda/amandad
server_args           = -auth=bsd amdump amindexd amidxtaped
}
service amandaidx
{
socket_type             = stream
protocol                    = tcp
wait                            = no

user                   = backup
group                = backup
groups                  = yes
server                    = /usr/lib/amanda/amindexd
disable                  = no
}
service amidxtape
{
socket_type             = stream
protocol               = tcp
wait                           = no
user                           = backup
group                     = backup
groups                     = yes
server                       = /usr/lib/amanda/amidxtaped
disable                   = no
}

Install the AMANDA Server

Install AMANDA and dependencies

sudo apt-get install amanda-server

Restart xinetd

sudo /etc/init.d/xinetd restart

Become “backup” user

su backup

Create copies of the configuration files, just in case

cp -R /etc/amanda/DailySet1 /etc/amanda/DailySet1.bak

Edit amanda.conf

Let’s get in and edit the amanda.conf
Code:

vim /etc/amanda/DailySet?1/amanda.conf

Make the following changes in the file
Code:

org “”
mailto “backupadmin@ubuntulinux.co.in ”
tpchanger “chg-disk”
changerfile “/etc/amanda/daily/changer”
tapedev “file:/amandabackup/DailySet1/slots”
tapetype HARDDISK
#tapetype HP-DAT <— comment this out
#labelstr “^HISS[0-9][0-9]*$” <— comment this out
amrecover_do_fsf yes
amrecover_check_label yes
amrecover_changer “changer”
define tapetype HARDDISK {
length mbytes
}

Edit disklist

The format for the disklist file is :

Dumptypes are deinfed in /etc/amanda/amanda.conf, but we’ll use the GNUTAR dumptype “comp-user-tar” for this example

Let’s get in and edit the disklist
Code:

vim /etc/amanda/DailySet1/disklist

Add a line like so
Code:

ubuntulinux.co.in /Project comp-user-tar

ubuntlinux.co.in /clientbackup comp-user-tar

What this line is telling AMANDA is that when it attempts to do a dump that it should connect to ubuntlinux.co.in, backup the directory /project and /clientbackup and user the options that are defined in amanda.conf for the “comp-user-tar” dumptype.

Create Virtual Tapes

Choose a location for your tapes to reside

Here we using /amandabackups/

Create the tapelist file that is necessary for indexing tapes available
Code:

touch /etc/amanda/DailySet1/tapelist

Create the location and set permissions for the virtual tapes
Code:

mkdir -p -m 770 /amandabackup/DailySet1/slots

chown -R backup:backup /amdndahosts

CD to the new directory

cd /amandabackup/DailySet1/slots

Create the necessary directories for the tapes
Code:

for (i=1; $i<=25; i++)?; do mkdir slot$i; done

Create symlink for the data directory to point to the first tape
Code:

ln -s slot1 data

Test the vtapes to be sure that we get an ONLINE message
Code:

ammt -f file:/amandabackup/DailySet?1/slots status

Label the tapes

for (i=1; $i<=9; i++)?; do amlabel DailySet1 DailySet?1-0$i slot $i; done

for (i=10; $i<=25; i++)?; do amlabel DailySet1 DailySet?1-$i slot $i; done

Output should look like (for each slot)

labeling tape in slot 1 (file:/amandabackup/DailySet?1/slots)
rewinding, reading label, not an amanda tape
rewinding, writing label DailySet?1-01, checking label, done.

Reset the changer back to slot 1

amtape DailySet1 reset

Output should look like

amtape: changer is reset, slot 1 is loaded.

Edit .amandahosts

On Ubuntu the .amandahosts file is located as /etc/amandahosts

Open the file

vim /etc/amandahosts

The file looks like

localhost backup
localhost root amindexd amidxtaped
ubuntlinux.co.in backup

ubuntlinux.co.in backup amindexd amidxtaped
ubuntlinux.co.in root amindexd amidxtaped

Page 2 (amanda client and backup and restore procedure