Linux 2012 : One more Awesome year!

In 1991, Linus Torvalds began creating the first version of Linux. Linux is a contemporary, open source implementation of UNIX, available at no cost on the Internet.

The Linux Foundation - a non-profit consortium dedicated to fostering the growth of Linux

A video Posted by The Linux Foundation showing the records and achievements by Linux in 2012

Top Viruses since 1986

Now a days, computer viruses are fast treading into our day to day life in the form of trojans, back doors, worms, malwares, spy wares and many more. A peek into the history of these notorious creatures reveal that the first ever PC virus appeared in the year 1986. It was named 'Brain' and multiplied itself by writing its code to the boot sector of floppy disks. Since then, several species have come and gone. Kaspersky Lab has prepared a selection of the 15 most influential malicious programs in history. 
“For the last 15 years, we have been working round the clock every day analysing and combating all kinds of IT threats that have evolved in that time from cyber hooliganism, via cybercrime to cyber warfare. Today it’s more important than ever to cooperate against digital threats. Recent attacks such as Stuxnet, Duqu and Flame have shown just how vulnerable IT infrastructures are to military and terrorist threats. But we are doing all we can to prevent the potential disasters that could result from these kinds of attacks,” said Eugene Kaspersky, CEO and co-founder, Kaspersky Lab.


Here's the list of the top 15:

1986- Brain, the first PC virus appeared: the virus spread by writing its code to the boot sector of floppy disks.

1988- The Morris worm infected around 10 per cent of the computers connected to the Internet (about 6000 computers).

1992- Michelangelo, the first virus to attract massive media attention. 

1995- Concept, the first macro virus. 

1999- Melissa ushers in the era of mass-mailing of malware responsible for huge global epidemics. 

2003- Slammer, a fileless worm, responsible for a massive worldwide epidemic.

2004- Cabir: first Proof-of-Concept for Symbian; propagated via Bluetooth. 

2006- Leap, the first virus for Mac OSX. 

2007- Storm Worm (Zhelatin) pioneers the use of distributed C&C servers.

2008- Koobface, the first malware to target Facebook. 

2008- Conficker, one of the biggest epidemics in history, infects businesses, home users and governments in over 200 countries.

2010- FakePlayer, SMS Trojan for Android.

2010- Stuxnet, a targeted attack on SCADA (Supervisory Control and Data Acquisition) systems; signaled the advent of the cyberwar era. 

2011- Duqu, a sophisticated Trojan that collects intelligence about its targets. 

2012- Flame, a highly sophisticated, malicious program that is actively being used as a cyber weapon to target entities in several countries.

The article is cited from http://news.efytimes.com/e1/87462/Top--PC-Viruses-Since.

Bluetooth icon missing in Ubuntu

Sometimes you see, that, your Bluetooth icon, which is supposed to be at the panel is not there OR sometimes you unintentionally remove it.
And when you right click on panel you see no options to get it back.

Steps to get back your bluetooth applet icon on your panel:

1. Right click on the top panel and scroll down until you find Notification area and Indication Applet and add it to the panel. after that
2. Open terminal: bluetooth-applet then ENTER
   
   
   
   
3. Now the blooth applet icon will start showing on your panel until you close the terminal.
4. Before closing the terminal window, Right click on the bluetooth applet icon on the panel and Lock to panel.
5. After that, exit the terminal window.

You will get your bluetooth applet icon.

Top vs ps command

Top Command

Top command is used for displaying top CPU processes which are currently live.
It periodically updates the selection of processes and displays it.

It is similar to Windows Task Manager in Windows.

Line 1 time, users load averagzombiee.

Line 2 total tasks, how many of them are running, stopped or zombie

Line 3 CPU usuage

Line 4 Memory Analysys

Highlight the running process by pressing z.

Kill a task: Press k - to kill a task and then PID 

Example: 3290 is PID of docky.

                Press k then PID : 3290

Learn more about top: $man top

ps command

ps (process status) command gives a snapshot of the current processes.

Example: $ps -ef    ---->to see all processes

             

Column 1 UID - user id

Column 2 PID - process id

Column 3 PPID - parent process id

Column 4 TTY - gives the name of the terminal connected to the standard input

Learn more about ps: $man ps

Zombie processes are those processes which have finished the execution and have released all the resources but still had an entry in the process table.

Example: $ps aux   ----> snapshot of all the processes will come and processes with STAT "z" are zombie processes

FIND Command in Linux Ubuntu

It has been occurred many times that we want to search some document or movie which we know is somewhere available on the hard disk but don't know the exact location.

In Linux, it won't be a much of a headache.
Find is one powerful command that will help you to search anything on your computer.

In terminal: find [directory where you want to search] -iname *[name or part of the file]*

Example: $find /home/ubuntu/Desktop -iname *programming*.doc

Here I want to search a document on Desktop and all the directories on it and it will show the documents which contain programming word in it.

It is a simple example of a Find command.

If you want to learn more about it

In Terminal: $man find

Photos into BIG posters!

Go to www.blockposters.com

• Proceed Step 1 by uploading your photo and click the continue button.
• Next you can adjust how large you want your poster by adjusting the page width, then click continue.
• Now you can download your photo as a PDF file.
• Take print of your pages.

You are done!

Wireless connection in Ubuntu

For this you need to click on Network-manager applet and see if you can see you
wireless there. If not, enable wireless driver from System > Administration > Hardware drivers.
Now coming to your modem settings, best solution is to configure it for "pppoe" mode.
( You can do it through Windows too, if you wish to )
1. Connect the modem with your computer with the LAN cable and turn it on.
2. Open your Browser ( Firefox ) and type 192.168.1.1 in the address bar. Type the username and password as “admin”.
3. After logging in, click Advance Setup on L.H.S. menu.
4. A table appears, check the checkbox in the first row showing "pvc 0" under the head remove, then click Remove button at the bottom.
5. Click Add, ensure the "vci" value as 35 , click Next.
6. Select the connection type as "PPPOE" , click Next.
7. Type your broadband username, password provided by your ISP and service name as multiplay, click Next.
8. Click next to reach the last page, click Apply/Save. 
9. Save and Reboot at the bottom of the table, wait for approx. 3 min. to automatically reboot the modem. After the modem reboots, confirm the stability of DSL light, after it becomes stable, you can start using your internet connection.

sudo gedit /etc/NetworkManager/nm-system-settings.conf
nm-system-settings.conf tab will open:
[main]
plugins=ifupdown,keyfile
no-auto-default=00:13:a9:61:9d:9d,
[ifupdown]
managed=false
Change this "false" to true.
Save, exit.
Then restart Networking.
sudo /etc/init.d/networking restart