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tutorial - BitDefender Antivirus Installation & Configuration on OpenSuSe Linux

BitDefender Antivirus Scanner for Unices is a versatile on-demand scanner built for Linux and FreeBSD systems. It provides antivirus and antispyware scanning for both UNIX-based and Windows-based partitions.

BitDefender Antivirus Scanner for Unices is highly customizable and capable of script and extension-based integration with various applications such as file managers and mail clients.

BitDefender Antivirus Scanner for Unices may be used free of charge at home or on your personal computer. In case you want to use BitDefender Antivirus for Unices for business purposes, a registration key must be purchased through the BitDefender Online Store or from BitDefender certified partners.
Features and Benefits
    * On-demand antivirus and antispyware protection
    * Script and extension-based integration with various applications and services:
          o Mail clients (e.g. Pine, Evolution) and Mail Server services
          o Scheduling services (e.g. Cron) ensuring scan and update automation
    * Classic command line scanner complete with a graphical user interface for better integration with desktop environments.
    * Automatic addition of the scanner's GUI to the system menu.
    * Three popular file manager plugins (the GPL-ed sources) included in the GUI package: Konqueror (KDE), Nautilus (GNOME) and Thunar (Xfce).
    * Action setting based on scan result type.

Installation:
Download BitDefender Antivirus from here (provide valid e-mail address and you will get the download link through mail)
PS : You can get your personal license from here.

Make the file executable:
# chmod +x BitDefender-Antivirus-Scanner-7.6-4.linux-gcc4x.i586.rpm.run

Run the BitDefender Antivirus installer:
# ./BitDefender-Antivirus-Scanner-7.6-4.linux-gcc4x.i586.rpm.run

You’ll be prompted with the end user licence agreement. At the end of the license type “accept” (without quotes). This will begin the installation of BitDefender antivirus on your machine.

Running Bitdefender:
After you have successfully installed the anti-virus go to Applications->System->More Programs->BitDefender Scanner and start the application.

Enter the free key that you requested and received in your email to get the free 1 year license.

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source:http://linuxpoison.blogspot.com/2009/10/135781757111654.html

tutorial - HowTo - Adobe Air Installation on OpenSuSe Linux

Adobe Technologies released the Linux version of Adobe AIR some time ago, Adobe® AIR runtime enables you to have your favorite web applications with you all the time. Since applications built for Adobe AIR run on your desktop computer without a web browser, they provide all the convenience of a desktop application.

Companies like eBay and AOL are using Adobe AIR to create exciting new applications that allow you to use their services on your desktop.

In short, Adobe AIR means applications that are easier, more powerful, and more fun to use.

Installation:
1) Download the file from here using the wget command:
http://airdownload.adobe.com/air/lin/download/latest/AdobeAIRInstaller.bin

2) Save the file in your Home folder.

3) Make it executable using following command

chmod +x AdobeAIRInstaller.bin

4) Now run this command to install Abobe Air:

sudo ./AdobeAIRInstaller.bin

Now you can go to Air market place and start downloading the required Air application.

source:http://linuxpoison.blogspot.com/2009/10/135781757110889.html

tutorial - openSUSE 11.2 Countdown - Get your Counter

You can help spread the word for openSUSE 11.2 before it’s released! The openSUSE project now has countdown banners that display the number of days before the next openSUSE release.

You can display the banner on your site, and the rendering is done via the openSUSE server. You can find the code and the right language for your site onhttp://en.opensuse.org/Countdown. You can link the banner to http://en.opensuse.org/OpenSUSE_11.2 which has information about the 11.2 release and information on testing prior to the final 11.2 release.

The banners were inspired by a post by Pavol Rusnak, and we received fantastic code and graphics contributions from several members of the openSUSE community, including Pascal Bleser, Jakub ‘jimmac’ Steiner, Pavol Rusnak, Marek Stopka, Kevin Dupuy, and Billy Juliani. Thanks to everyone who contributed!
So, grab a banner and show your openSUSE pride.

source:http://linuxpoison.blogspot.com/2009/10/13578175717692.html

tutorial - HowTo Install Latest Version of Wine on Ubuntu Linux

Wine is a translation layer (a program loader) capable of running Windows applications on Linux and other POSIX compatible operating systems. Windows programs running in Wine act as native programs would, running without the performance or memory usage penalties of an emulator, with a similar look and feel to other applications on your desktop.

Wine benefits

    * Wine makes it possible to take advantage of all the Unix strong points (stability, flexibility, remote administration) while still using the Windows applications you depend on.
    * Unix has always made it possible to write powerful scripts. Wine makes it possible to call Windows applications from scripts that can also leverage the Unix environment to its full extent.
    * Wine makes it possible to access Windows applications remotely.
    * Wine makes it economical to use thin clients: simply install Wine on a Linux server, and voila, you can access these Windows applications from any X terminal.
    * Wine can also be used to make existing Windows applications available on the Web by using VNC and its Java client.
    * Wine is Open Source Software, so you can extend it to suit your needs or have one of many companies do it for you.

Wine Installation on Ubuntu:
First, open a terminal window (Applications → Accessories → Terminal). Then add the repository's key to your system's list of trusted APT keys by copy and pasting the following into your terminal:

wget -q http://wine.budgetdedicated.com/apt/387EE263.gpg -O- | sudo apt-key add -

Next, add the repository to your system's list of APT sources:

For Ubuntu Jaunty (9.04):
sudo wget http://wine.budgetdedicated.com/apt/sources.list.d/jaunty.list -O /etc/apt/sources.list.d/winehq.list

For Ubuntu Intrepid (8.10):
sudo wget http://wine.budgetdedicated.com/apt/sources.list.d/intrepid.list -O /etc/apt/sources.list.d/winehq.list

For Ubuntu Hardy (8.04):
sudo wget http://wine.budgetdedicated.com/apt/sources.list.d/hardy.list -O /etc/apt/sources.list.d/winehq.list

Then update APT's package information by running 'sudo apt-get update'. You can now install Wine normally or by typing 'sudo apt-get install wine' into the terminal.

source:http://linuxpoison.blogspot.com/2009/10/13578175715053.html

tutorial - HowTo build Google Reader like Multi-User RSS and Atom Aggregator - Feed On Feeds

Desktop aggregators are great. They sit there all day, pinging away at sites, and as soon as they notice something new, they pop up little windows on your desktop, and let you read items. But what about when you go home from work? Or what about when you are on a trip? You get totally out of sync, and don't know what you've read and haven't read. You are enraged.

A server side aggregator solves this. It keeps track of what items you've read, and keeps happily checking up on your feeds no matter where you are. Whenever you want to see what's new, you just bring up a web page and scan the newest items. You can mark the items as read so they won't be shown again. Or, you can just always show the most recent N items, like the way LiveJournal's friends pages work. Also, having the aggregator in your browser eliminates the "impedance mismatch" that sometimes occurs between a desktop aggregator and your browser. All your native browsing methods work on a FEED ON FEEDS page. Open pages in new tabs, bookmark them for later, browse whatever way you like.

Installation and Configuration of Feed On Feeds:
1) Download this tarball.

2) Explode it using command - tar -zxvf feedonfeeds-0.5.tgz

3) Copy fof-config-sample.php to fof-config.php, and edit it to contain the correct DB connection information.

define('FOF_DB_HOST', "host.example.com");
define('FOF_DB_USER', "username");
define('FOF_DB_PASS', "password");
define('FOF_DB_DBNAME', "database");

If needed, create a MySQL DB for FEED ON FEEDS. Or, you can use an existing DB.

4) Upload the entire tree to wherever on your server you want FEED ON FEEDS to live.

5) Load the page http://{your server}/{wherever you put FEED ON FEEDS}/install.php. The installer will first check that it can connect to your DB, and then attempt to create the necessary two tables. Then, it will attempt to create a subdirectory called cache where it will store cached copies of RSS feeds.

6) Just set a password for the admin account and you should be ready to go!
Done! Navigate to http://example.com/feed-on-feeds/, login, and start subscribing or creating users!

Setting up scheduled updates
The best way to use FEED ON FEEDS is to set it up to update periodically, and then read feeds whenever you have the time. FEED ON FEEDS comes with a script, update-quiet.php, which will update all feeds without producing any output. You can use cron, or whatever task scheduling system is available to you, to call this script periodically to update your feeds. Once per hour should be sufficient. For example, here is a crontab entry to run it 30 minutes past each hour:

30 * * * * /usr/bin/php -f http://example.com/feed-on-feeds/update-quiet.php

Alternatively, you can just click on 'update all feeds' every once in a while yourself to get the latest items.

source:http://linuxpoison.blogspot.com/2009/10/13578175716751.html

tutorial - Mac OS X like Ubuntu - Lin-X

Lin-X is an OS based off of the most popular Linux distribution, Ubuntu. Lin-X looks like Mac OSX and shares many of the same features. With Lin-X you get the security and stability of Ubuntu with the feel of OSX.

Because Lin-X is based off of Ubuntu it shares the same repositories and update manager, along with the support cycles. Unlike other Linux distributions Lin-X comes jam-packed with loads of “iCandy”.

It is one of the only OS that comes with the Compiz Fusion customized and ready to go right out of the box, giving you outstanding graphics right after installation. Lin-X is fully functional when booting from the live DVD and runs blazingly fast without loosing any features.

Lin-X 1.1 Download - here

source:http://linuxpoison.blogspot.com/2009/10/13578175719342.html

tutorial - Howto Add a New User in Ubuntu Linux

Ubuntu Linux is a multi-user multi-tasking operating system. This means that multiple users can simultaneously use Ubuntu at the same time. This is a video which explains step by step how to add a new user in Ubuntu Linux.

source:http://linuxpoison.blogspot.com/2009/10/13578175712831.html

tutorial - Howto Get Hardware Information in Linux- lshw

lshw (HardWare LiSter) is a small tool for Linux to provide detailed information on the hardware configuration of the machine. It can report exact memory configuration, firmware version, mainboard configuration, CPU version and speed, cache configuration, bus speed, etc.

It currently supports DMI (x86 only), OpenFirmware device tree (PowerPC only), PCI/AGP, ISA PnP (x86), CPUID (x86), IDE/ATA/ATAPI, PCMCIA (only tested on x86) and SCSI.

Installation:
OpenSuSe 11.1 user can use "1-click" installer to install lshw - here

Debian packages are available for many platforms.

Ubuntu packages are available.
sudo apt-get install lshw-gtk

Fedora now includes lshw and its GUI and can be installed using following command
$ sudo yum install lshw lshw-gui

Once you have lswh installed on the system the usage is straight forth.Then running the lshw-X brings up the list of hardware that you can browse through. It is similar to checking the hardware information from Windows’ control panel.

lshw command also provides output in multiple file formats. For example, you can get the output in HTML, XML, text and a few more. For instance, to get the output in HTML, you use the -html option as follows :

# lshw -html > hardware.html

source:http://linuxpoison.blogspot.com/2009/10/135781757113972.html

tutorial - HowTo Set User Password Expiration Policy on Linux

The password policy can allow users can use the same passwords indefinitely or specify that passwords expire after a given time. In general, the longer a password is in use, the more likely it is to be discovered. If passwords expire too often, however, users may have trouble remembering them and resort to writing their passwords down. A common policy is to have passwords expire every 30 to 90 days. Below is the example of setting the password Expiration policy for a particular user after every 60 days.

First, get the list of password policies set for a user "nikesh" using following command

# chage --list nikesh

Minimum: 0
Maximum: 99999
Warning: 7
Inactive: -1
Last Change: Aug 10, 2009
Password Expires: Never
Password Inactive: Never
Account Expires: Never

Now lets change its expiry password date using following command

# chage -M 60 nikesh

This will make its password to expire after 60 days of the last change date, check the information using command chage --list nikesh

Minimum: 0
Maximum: 99999
Warning: 7
Inactive: -1
Last Change: Aug 10, 2009
Password Expires: Oct 09, 2009
Password Inactive: Never
Account Expires: Never

Now set the warning time period for password expiration so that user can think of some good strong password, this can be done using command chage -W 5 nikesh and after setting the warning period check the information for that particular user.

Minimum: 0
Maximum: 99999
Warning: 5
Inactive: -1
Last Change: Aug 10, 2009
Password Expires: Oct 09, 2009
Password Inactive: Never
Account Expires: Never

source:http://linuxpoison.blogspot.com/2009/10/135781757110272.html

tutorial - OpenSuse Wallpapers

Following is a collection of 17 hand picked OpenSuse wallpapers. All the images are copyright their original authors. Please request them before using it for commercial purposes or otherwise.

And here is the Huge Collection of Firefox Wallpapers

techhead89

deviantdark

firheruwen

dakki000

darkslavik

ratadeoz

opensuse

rebe

gnokii

jiunec mu

Robert Lihm

reverendted

Mark Richards

Source: http://linuxhub.net/2009/07/17-gorgeous-opensuse-wallpapers

source:http://linuxpoison.blogspot.com/2009/10/135781757173.html

tutorial - Linux can help you to make your Baby Sleep peacefully

Yet another good use of Linux

Source: http://www.androidtux.co.cc/?p=336

source:http://linuxpoison.blogspot.com/2009/10/135781757116994.html

tutorial - Howto Detect IP conflicts in Linux - IPwatchD

IPwatchD is simple daemon that uses libpcap to detect IP conflict on Linux. It can be configured to listen on one or more interfaces (alias interfaces are also supported) in active or passive mode. In active mode IPwatchD protects your host before IP takeover by answering Gratuitous ARP requests received from conflicting system. In passive mode it just records information about conflict through standard syslog interface.

To build IPwatchD from source code you will need gcc, libpcap and libnet1 installed in your system. For desktop notification support you will also need libnotify. On Ubuntu it should be sufficient to install following packages with all dependencies: # apt-get install build-essential libpcap-dev libnet1-dev libnotify-dev

Download IPwatchD 1.1.1 source from sourceforge project page.
Extract the code:

$ bunzip2 ipwatchd-1.1.1.tar.bz2
$ tar -xf ipwatchd-1.1.1.tar
$ cd ipwatchd-1.1.1/src

Build IPwatchD with the desktop notification support..
$ make ..or as a pure daemon: $ make daemon

Install IPwatchD as root with command: # make install
IPwatchD executable is installed into /usr/local/sbin and the configuration file is copied into /usr/local/etc.
Edit configuration file /usr/local/etc/ipwatchd.conf with your favourite editor to suite your needs.

Run IPwatchD as root with command:
# /usr/local/sbin/ipwatchd -c /usr/local/etc/ipwatchd.conf

Killall utility can be used to gracefully stop IPwatchD:
# killall ipwatchd

source:http://linuxpoison.blogspot.com/2009/10/135781757116445.html

tutorial - How to Tune Swap Setting on Linux for Maximum Performance

HANDLE WITH CARE

Since 2.6, there has been a way to tune how much Linux favors swapping out to disk compared to shrinking the caches when memory gets full.

ghoti adds: "When an application needs memory and all the RAM is fully occupied, the kernel has two ways to free some memory at its disposal: it can either reduce the disk cache in the RAM by eliminating the oldest data or it may swap some less used portions (pages) of programs out to the swap partition on disk. It is not easy to predict which method would be more efficient. The kernel makes a choice by roughly guessing the effectiveness of the two methods at a given instant, based on the recent history of activity."

Before the 2.6 kernels, the user had no possible means to influence the calculations and there could happen situations where the kernel often made the wrong choice, leading to thrashing and slow performance. The addition of swappiness in 2.6 changes this. Thanks, ghoti!

Swappiness takes a value between 0 and 100 to change the balance between swapping applications and freeing cache. At 100, the kernel will always prefer to find inactive pages and swap them out; in other cases, whether a swapout occurs depends on how much application memory is in use and how poorly the cache is doing at finding and releasing inactive items.

The default swappiness is 60. A value of 0 gives something close to the old behavior where applications that wanted memory could shrink the cache to a tiny fraction of RAM. For laptops which would prefer to let their disk spin down, a value of around 30 or less is recommended.

You can see what the current ( default ) swappiness is by doing:

# cat /proc/sys/vm/swappiness

As a sysctl, the swappiness can be set at runtime with following command:

# echo 30 >/proc/sys/vm/swappiness

The default when linux boots can also be set in /etc/sysctl.conf:

vm.swappiness = 30

Some patchsets allow the kernel to auto-tune the swappiness level as it sees fit; they may not keep a user-set value.

source:http://linuxpoison.blogspot.com/2009/10/135781757111482.html

tutorial - HowTo Install .deb packages on Ubuntu Linux

Debian (.deb) packages are the packages that are used in Ubuntu. You can install any .deb package in your system. .deb files can generally be installed from your file manager (Nautilus) merely by clicking on them, since file associations with the default installer is already set in Ubuntu. These instructions are for those who wish to install packages from the command-line terminal (Terminal).

Install a downloaded Debian (Ubuntu) package (.deb):
sudo dpkg -i packagename.deb

Remove a Debian (Ubuntu) package (.deb):
sudo dpkg -r packagename

Reconfigure/Repair an installed Debian (Ubuntu) package (.deb):
sudo dpkg-reconfigure packagename

Example:
sudo dpkg-reconfigure mpd

source:http://linuxpoison.blogspot.com/2009/10/13578175712569.html

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