Showing posts with label GENERAL KNOWLEDGE. Show all posts
Showing posts with label GENERAL KNOWLEDGE. Show all posts
Raj Mishra

You can add an Internet URL address bar to your Windows XP taskbar. Doing so will let you type in URLs and launch Web pages without first launching a browser.



It will also let you launch some native Windows XP applications in much the same way as you would via the Run menu (so you could type in calc to launch the calculator or mspaint to launch Microsoft Paint. Here's how you add the address bar:

1. Right-click on the taskbar, select Toolbars, and then click Address.

2. The word Address will appear on your taskbar.

3. Double click it to access it.

4. If that doesn't work, your taskbar is locked. You can unlock it by right-clicking on the taskbar again and uncheck Lock the Taskbar.

NOTE: You may also need to grab the vertical dotted lines beside the word Address and drag it to the left to make the Address window appear.
Raj Mishra


Did you know that in Windows XP you can shut down your computer from the (eventually DOS prompt) command line box? Moreover, you can do this by clicking your mouse only once.

All you need to do is... right-click on an empty Desktop spot -> select New -> Shortcut -> type shutdown followed by a space, and then enter one or more of the parameters listed below -> click Next -> type a suggestive name for your new shortcut -> finally, click Finish.

This is the Shutdown.exe (located in %systemroot%\System32, usually C:\Windows\System32) syntax:


shutdown [-i|-l|-s|-r|-a] [-f] [-m \\computername] [-t xx] [-c "Text"] [-d[u][p]:xx:yy]

Valid command line switches:

-a = Abort system shutdown in progress ONLY IF the -t xx timeout option was already set to ANY value other than 0. ALL switches except -l and -m are ignored during abort.

-c "Text" = Text comment (case insensitive) to be displayed in the Message area of the System Shutdown window. MUST be enclosed between quotes. Maximum allowed 127 ASCII characters.

-d [u][p]:xx:yy = Reason code for shutdown:
u = User code.
p = Planned shutdown code.
xx = Major reason code. Positive integer number less than 256.
yy = Minor reason code. Positive integer number less than 65536.

-f = Force running applications to close without warning.

-i = Display the shutdown interface (GUI). MUST be the first option!

-l = Log off the current user of the local computer (default action). Can NOT be used with the -m option unless the current user has Sysadmin rights, in which case the -m switch takes precedence.

-m \\computername = Remote/network computer name (most always case sensitive) to log off/restart/shut down. Current user MUST have Sysadmin rights to be allowed to use this switch!

-s = Shut down the local computer.

-r = Shut down and restart (reboot) the local computer.

-t xx = Set shutdown timer to timeout for xx seconds. IF NOT specified defaults to 20 seconds. Allowed values between 0 and 99 seconds. The -a switch is the ONLY one that CAN be used during the timeout period.

NOTES:
The dash (-) in front of these switches can be replaced by a forward slash (/).

Spaces are NOT required to separate the shutdown command from ANY following switches, but ARE required to separate ANY switch from its following parameter(s), if any.
For example:

shutdown -s -c "Shutting down!" -t 3

tells your computer to shutdown after waiting for 3 seconds while the System Shutdown window will display text above in the Message area.

Optional: after you're done creating your customized shortcut for shutdown -> right-click on it -> select Properties -> enter your desired key "combo" in the Shortcut Key box (e.g. Ctrl + Alt + End) -> click OK/Apply.
From now on just left-click on your shutdown shortcut or hit that key combination to turn off/restart/log off your computer.
Raj Mishra

The best firewall is a hardware firewall that is completely separate from your operating system. It need not be a dedicated router, could be an old pentium box running Linux. Below I have found some sites that have How To's on setting up an outside hardware router using an old computer and using a little linux program that fits on a single floppy disk.

Brief Description:
floppyfw is a router with the advanced firewall-capabilities in Linux that fits on one single floppy disc.

Features:
Access lists, IP-masquerading (Network Address Translation), connection tracked packet filtering and (quite) advanced routing. Package for traffic shaping is also available.
Requires only a 386sx or better with two network interface cards, a 1.44MB floppy drive and 12MByte of RAM ( for less than 12M and no FPU, use the 1.0 series, which will stay maintained. )
Very simple packaging system. Is used for editors, PPP, VPN, traffic shaping and whatever comes up. (now this is looking even more like LRP (may it rest in peace) but floppyfw is not a fork.)
Logging through klogd/syslogd, both local and remote.
Serial support for console over serial port.
DHCP server and DNS cache for internal networks.

floppyfw


h#tp://www.zelow.no/floppyfw/



Sentry Firewall CD-ROM is a Linux-based bootable CDROM suitable for use as an inexpensive and easy to maintain firewall, server, or IDS(Intrusion Detection System) Node. The system is designed to be immediately configurable for a variety of different operating environments via a configuration file located on a floppy disk, a local hard drive, and/or a network via HTTP(S), FTP, SFTP, or SCP.

The Sentry Firewall CD is a complete Linux system that runs off of an initial ramdisk, much like a floppy-based system, and a CD. The default kernel is a current 2.4.x series kernel with various Netfilter patches applied. An OpenWall-patched current 2.2.x kernel is also available on the CD.

Booting from the CDROM is a fairly familiar process. The BIOS execs the bootloader(Syslinux) - which then displays a bootprompt and loads the kernel and ramdisk into memory. Once the kernel is running, the ramdisk is then mounted as root(/). At this point our configuration scripts are run(written in perl) that configure the rest of the system. It is the job of these configure scripts to put the various startup and system files into the proper location using either what is declared in the configuration file(sentry.conf) or the system defaults located in the /etc/default directory.

Most of the critical files used at boot time can be replaced with your own copy when declared in the configuration file. This is essentially how we allow the user to configure the system using his/her own configuration and init files.

All of the binaries, files, scripts, etc, used to create the CD-ROM are also available on the CD-ROM. So, with a little practice, you can easily build and customize your own bootable Sentry Firewall CD. Please see the HOWTO for more details.


Sentry Firewall


ht*p://www.sentryfirewall.com/docs.html#overview
Raj Mishra


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Raj Mishra


If you don't want to spend big bucks on a new PC, consider upgrading your old system's motherboard and CPU. This can boost the machine's performance and give you access to the latest technologies. It can also save you hundreds of dollars.

What you won't get is a new hard drive, optical drive, or operating system, though the new motherboard gives you the option of upgrading these components later. When you do it yourself, you choose the make, model, and cost that serve you best, rather than settling for what's preloaded in an off-the-shelf machine.

For as little as $200 to $350, you can purchase a motherboard with a new Pentium 4 or Athlon processor and 512MB of RAM. (Visit this link to check the latest motherboard prices.) That's hundreds of dollars less than the retail cost of a midrange PC that supports AGP 8X graphics cards, Serial ATA drives, and the other advanced features that your new motherboard is likely to offer.


Motherboard Buyers Guide

Size matters: Most desktop PCs sold in the last few years conform to the ATX form factor (as do most motherboards), but not all do. Many small or ultrabudget systems are based on other designs, and some PCs from HP/Compaq, IBM, and other big-name vendors aren't ATX-compatible. Refer to your computer's documentation to see if the new motherboard will fit inside its case.

Find the right CPU: The optimal combination of CPU price and performance may lead you to early versions of Athlon XP and Pentium 4 processors: Retail boxed versions of 1- to 2-GHz AMD Athlon XP processors cost less than $100, while Pentium 4 processors running at comparable speeds are less than $130. OEM versions of both (that's minus the fancy box, the cooling fan, and sometimes a warranty) may be priced considerably lower. Avoid older Pentium 4 processors with 256KB of L2 cache. CPUs with 512KB cache are faster and well worth the small added expense.

Be picky: Steer clear of no-name vendors and buy from established manufacturers only.

Pay for power: Your old PC's power supply may not have enough wattage or may lack the 12-volt amperage needed to run some Pentium 4 and Athlon motherboards. Check the new motherboard's requirements against the specs on your power supply. If in doubt, buy a power supply that generates 300 watts or more,

Faster is better: A motherboard's frontside bus speed is the rate at which data moves between the CPU and RAM. FSB speed can have a greater effect on overall system performance than listed CPU speed, which is a multiple of the FSB speed. The faster the FSB, the better.

Get it all: Your new motherboard needs PCI slots and USB ports, two UltraATA/100 connectors, parallel and serial ports (if you use these), and at least two DIMM slots for RAM (DDR RAM is best). For a little extra money, you can get Serial ATA, ethernet, RAID, FireWire, Wi-Fi, and other advanced features.

Sight and sound off: Some low-cost motherboards have sound and graphics functions built in. The quality of these integrated functions is often marginal. Make sure that any built-in sound and graphics can be disabled, and that separate audio and graphics boards can be added.

Minimize Your Mousing

For people in a hurry, every unnecessary mouse movement is an aggravation. Windows 2000, Me, and XP let you set the pointer to automatically move to commonly used buttons in dialog boxes. Click Start, Settings, Control Panel (or Start, Control Panel in XP), and click or double-click Mouse (choose "Printers and Other Hardware" first if you're in XP's Categories view, or "View all Control Panel options" if you're in Me's "commonly used" view). Now select Pointer Options, check the box labeled "Automatically move pointer to the default button in a dialog box" (the option's wording varies slightly in Windows 2000), and click OK.
Raj Mishra



Procedure used to recover data from a quick-erased CD-RW disc

1. Make a file of exactly the size of the cdrw disc's capacity (650MB in my case).
(this step may not be needed)

2. With Nero I created a new project and added the file to it so that I have the disc filled. I gues you can also fill up the disc with other files.
The reason why I fill the disc is because I want Nero to make a session that uses the entire disc. Like I wrote earlier in this thread I experienced that my CD-Drive refuses to read off the disc beyond the session's boundaries. When you quick-erase a disc there is no session anymore so the drive will not read at all. Burning a new session will overwrite the data and burning only a small session will NOT make the drive read the other data that is still on the disc.
The reason why I used the one big file is so that I could later on recognize which part of the disc was overwritten by this file because this file contained all zeros (0x00).

3. I pressed burn and selected disc-at-once. Then while Nero was burning the leadin I pressed cancel. My CD-Drive finished writing the lead-in and Nero reported an error.
This is what was accomplished however: Now the disc contains a session that says that the used disc size is the complete disc. Nero did not get to writing file because I cancelled it. Good thing because I don't want Nero to write any files because my old data will get overwritten!
I gues it works the same with different writing software. Another method that I used during a test was simply press the reset button of the computer when the burning software was done with writing the lead-in and started with the files.

4. I had to restart the computer after cancelling burning.
With the cdrw disc inserted I saw in "my computer" that windows recognized that the disc was 650MB, clicking on it gave an error. Good so far!

Now with IsoBuster you can extract the sectors from a disc to a file. This is what I did.
I gues that if you have data-recovery software at this point it will be usefull because now (if all went well;)) the CD-Drive WILL read data from the entire disc. Anyway, I used ISO-Buster because the files that I needed to recover where a bit odd for nowadays (.XM, .S3M, .MP3):
In IsoBuster I had to do several steps:

Step 1: Find out from and to which sector the drive will read
By choosing "Sector View" you can look at any given sector.
Here I found out what the first and the last sectors where that are readable. (Hint I used the method for the old game: "Gues a number below 100, I'll tell if it is higher or lower than what you gues")
Step 2: Extract the actual sectors
By choosing "Extract From-To" you can extract any given range of sectors to a file. My disc was a data-disc so I choose the first extraction type "User data, 2048 bytes/block...".

In the end I got a .tao file which was about 650MB. I ran several programs on it to look for files inside a file by searching for file-header-paterns:
1. Multi Ripper 2.80 (for DOS, for the .XM files. It does many other file formats as well (jpg,png, bmp,wav,etc,etc +100). Try google with this query: Multi Ripper 2.80. I still had the file from good old days but I saw several good search results)

2. Winamp for mp3.
Winamp will scan any file when you give it the extension .mp3 and play it as one big song (so I renamed the .tao file to .mp3). I used the discwriter to get a .wav and the Adobe Audition to manually cut and save my songs. I looked at the MP3 file format and it is hard to find an mp3 file in a big file because it has no clear header just a bunch of mpeg-frames in most cases for me . A lot of my files had no ID3v2 or ID3v1 tags... But after a couple of hours I recovered everything.

Finally a list of used stuff:

Software:
- IsoBuster v1.5
- Nero 6.3.0.3
- Multi Ripper 2.80
- WinAmp v5.02
- Windows XP Pro NL (patched up)

Hardware:
- NEC DVDRW ND1300A 1.06

Disc:
- some old 4 speed cdrw
Raj Mishra
Translating Binary to Tex
Contents
1. Introduction
2. The Binary System
3. Converting Binary to ASCII (Text)

Introduction:
We’ve all seen binary code. We’ve come to think of them as a bunch of ones and zeroes in long strings…
010010101010101001101011

But these ones and zeroes can also represent decimal numbers. First off, I will show you how to read these numbers as the decimal numbers we’re used to in our daily life. Then, I will show you how to use those numbers and your keypad to translate them into text. Note that your computer doesn’t use the decimal system, so technically, when it converts binary to text, it doesn’t go through the process I will show you. This is just a divertive way of explaining you how the binary system works.

The Binary System:
Here’s a simple example of binary:
10101

Let’s think of the example above as empty slots:
_ _ _ _ _

First off, you read binary from right-to-left. It’s just the way it’s designed. The first slot from the right represents a value of one, the second from the right a value of two, the third from the right a value of four, the fourth from the right a value of eight, the fifth from the right a value of sixteen, and the cycle continues by multiples of 2. This will never change.

By putting a 1 or a 0 in those slots you are either saying you want to corresponding value that’s attached to that slot or you don’t. A 1 means yes, and a 0 means no. For example, putting a zero in the first slot from the right, but a 1 in the second slot from the right means you want a two, but not a one:
_ _ _ 1 0

As such, the number above equals to a decimal value of two.

As an example, let’s say you want to represent eight in binary form. Well, thinking about the slots, you want the first slot to be 0 because you don’t want a one, you want the second slot to also be 0 because you don’t want a two, you want the third slot to also to be 0 because you don’t want a four, but you want the fifth slot to be 1 because you want a value of eight. As such, eight in binary form is:
1 0 0 0 (or simply 1000 without those underlines)

Now it is important to note that the amount of zeroes that precede the first value of one from the left is unimportant. So for example:
1 0 0 0 is the same as 0 0 0 1 0 0 0 (1000 = 000100)

To get it cleared up, here’s another example:
0 1 is the same as 1


Exercises: What do the following equal in decimal terms?
a) 100
b] 000100
c) 100000
d) 0010

Answers:
a) 4
b] 4
c) 32
d) 2

If you got the answers above right, then you pretty much understand the basics of binary.
Let’s now understand how to get the corresponding decimal values to the numbers which are not multiples of 2.

To get the total value of a binary number, add the values corresponding to each slot. So, for example, three in binary would be:
11

The above corresponds to three because if you add the total values of all the slots, that is to say a one from the slot to the right, and a two from the second slot to the right, then it equals three.

As another example, let’s say you want to represent 5 in binary terms. Then you would need a value of one to be added to a value of four, and you would not want a value of two:
101 [Reading from the right: 1(one) + 0(two) + 1(four) = five]

Here’s an additional example:
001011 [Reading from the right: 1(one) + 1(two) + 0(four) + 1(eight) + 0(sixteen) + 0(thirty-two) = eleven)



Exercises: What do the following equal in decimal terms?
a) 11011
b] 110
c) 010101
d) 10110

Answers:
a) 27
b] 6
c) 21
d) 22

If you got the above questions correct [without cheating], then you essentially understand the binary system. Understanding the binary system was the hard part. What follows is pretty easy.

3. Converting Binary to ASCII (Text)
ASCII is essentially the letters, numbers and symbols that are stored in our computers through the use of fonts. When the keyboard relays the buttons you pressed, it sends in a code which is then converted to the ASCII equivalent of “k” or “5” or whatever key you pressed.

Here’s an example of a message “hidden” in binary text:
0100100001100101011011000110110001101111

Now there are only so many letters, numbers and symbols stored for ASCII. Having sets of 8 digits for their binary equivalent is more than enough to represent all of these letters and the like. As such, all strings that represent text like in the above are separated into bits of 8 for simplicity:
01001000 01100101 01101100 01101100 01101111

Okay, so our example message was separated into 8 digit strings. The decimal value for each of these strings in the example was calculated for you.
01001000 = 72
01100101 = 101
01101100 = 108
01101100 = 108
01101111 = 111

The result was 72,101,108,108,111. Now, there is something called the ASCII table. It essentially corresponds to the binary numbers from yore to the equivalent letters/symbols/numbers. But since we found the decimal values of these binary strings, we can use a major shortcut.

By pressing ALT + [The Number], you will get the ASCII equivalent of that number. For example, by pressing the ALT key and at then (while keeping it down) the numbers 72 in any text editor, you will get the corresponding “H” to show up.

Let’s do so for the entire example message:
72 = H
101 = e
108 = l
108 = l
111 = o

So the entire “hidden” message translates to “Hello”.


Exercise: Decode the following message
01000011011011110110111001100111011100100110000101110100011101010110110001100001
011101000
1101001011011110110111001110011 00100001

Hint: The first step on your way to decoding the message (separated into bytes for you)
01000011 01101111 01101110 01100111 01110010 01100001 01110100 01110101 01101100 01100001 01110100 01101001 01101111 01101110 01110011 00100001
Raj Mishra
General Keyboard Shortcuts
CTRL+C (Copy)
CTRL+X (Cut)
CTRL+V (Paste)
CTRL+Z (Undo)
DELETE (Delete)
SHIFT+DELETE (Delete the selected item permanently without placing the item in the Recycle Bin)
CTRL while dragging an item (Copy the selected item)
CTRL+SHIFT while dragging an item (Create a shortcut to the selected item)
F2 key (Rename the selected item)
CTRL+RIGHT ARROW (Move the insertion point to the beginning of the next word)
CTRL+LEFT ARROW (Move the insertion point to the beginning of the previous word)
CTRL+DOWN ARROW (Move the insertion point to the beginning of the next paragraph)
CTRL+UP ARROW (Move the insertion point to the beginning of the previous paragraph)
CTRL+SHIFT with any of the arrow keys (Highlight a block of text)
SHIFT with any of the arrow keys (Select more than one item in a window or on the desktop, or select text in a document)
CTRL+A (Select all)
F3 key (Search for a file or a folder)
ALT+ENTER (View the properties for the selected item)
ALT+F4 (Close the active item, or quit the active program)
ALT+ENTER (Display the properties of the selected object)
ALT+SPACEBAR (Open the shortcut menu for the active window)
CTRL+F4 (Close the active document in programs that enable you to have multiple documents open simultaneously)
ALT+TAB (Switch between the open items)
ALT+ESC (Cycle through items in the order that they had been opened)
F6 key (Cycle through the screen elements in a window or on the desktop)
F4 key (Display the Address bar list in My Computer or Windows Explorer)
SHIFT+F10 (Display the shortcut menu for the selected item)
ALT+SPACEBAR (Display the System menu for the active window)
CTRL+ESC (Display the Start menu)
ALT+Underlined letter in a menu name (Display the corresponding menu)
Underlined letter in a command name on an open menu (Perform the corresponding command)
F10 key (Activate the menu bar in the active program)
RIGHT ARROW (Open the next menu to the right, or open a submenu)
LEFT ARROW (Open the next menu to the left, or close a submenu)
F5 key (Update the active window)
BACKSPACE (View the folder one level up in My Computer or Windows Explorer)
ESC (Cancel the current task)
SHIFT when you insert a CD-ROM into the CD-ROM drive (Prevent the CD-ROM from automatically playing)
Dialog Box Keyboard Shortcuts
CTRL+TAB (Move forward through the tabs)
CTRL+SHIFT+TAB (Move backward through the tabs)
TAB (Move forward through the options)
SHIFT+TAB (Move backward through the options)
ALT+Underlined letter (Perform the corresponding command or select the corresponding option)
ENTER (Perform the command for the active option or button)
SPACEBAR (Select or clear the check box if the active option is a check box)
Arrow keys (Select a button if the active option is a group of option buttons)
F1 key (Display Help)
F4 key (Display the items in the active list)
BACKSPACE (Open a folder one level up if a folder is selected in the Save As or Open dialog box)
Microsoft Natural Keyboard Shortcuts
Windows Logo (Display or hide the Start menu)
Windows Logo+BREAK (Display the System Properties dialog box)
Windows Logo+D (Display the desktop)
Windows Logo+M (Minimize all of the windows)
Windows Logo+SHIFT+M (Restore the minimized windows)
Windows Logo+E (Open My Computer)
Windows Logo+F (Search for a file or a folder)
CTRL+Windows Logo+F (Search for computers)
Windows Logo+F1 (Display Windows Help)
Windows Logo+ L (Lock the keyboard)
Windows Logo+R (Open the Run dialog box)
Windows Logo+U (Open Utility Manager)
Accessibility Keyboard Shortcuts
Right SHIFT for eight seconds (Switch FilterKeys either on or off)
Left ALT+left SHIFT+PRINT SCREEN (Switch High Contrast either on or off)
Left ALT+left SHIFT+NUM LOCK (Switch the MouseKeys either on or off)
SHIFT five times (Switch the StickyKeys either on or off)
NUM LOCK for five seconds (Switch the ToggleKeys either on or off)
Windows Logo +U (Open Utility Manager)
Windows Explorer Keyboard Shortcuts
END (Display the bottom of the active window)
HOME (Display the top of the active window)
NUM LOCK+Asterisk sign (*) (Display all of the subfolders that are under the selected folder)
NUM LOCK+Plus sign (+) (Display the contents of the selected folder)
NUM LOCK+Minus sign (-) (Collapse the selected folder)
LEFT ARROW (Collapse the current selection if it is expanded, or select the parent folder)
RIGHT ARROW (Display the current selection if it is collapsed, or select the first subfolder)
Shortcut Keys for Character Map
After you double-click a character on the grid of characters, you can move through the grid by using the keyboard shortcuts:
RIGHT ARROW (Move to the right or to the beginning of the next line)
LEFT ARROW (Move to the left or to the end of the previous line)
UP ARROW (Move up one row)
DOWN ARROW (Move down one row)
PAGE UP (Move up one screen at a time)
PAGE DOWN (Move down one screen at a time)
HOME (Move to the beginning of the line)
END (Move to the end of the line)
CTRL+HOME (Move to the first character)
CTRL+END (Move to the last character)
SPACEBAR (Switch between Enlarged and Normal mode when a character is selected)
Microsoft Management Console (MMC) Main Window Keyboard Shortcuts
CTRL+O (Open a saved console)
CTRL+N (Open a new console)
CTRL+S (Save the open console)
CTRL+M (Add or remove a console item)
CTRL+W (Open a new window)
F5 key (Update the content of all console windows)
ALT+SPACEBAR (Display the MMC window menu)
ALT+F4 (Close the console)
ALT+A (Display the Action menu)
ALT+V (Display the View menu)
ALT+F (Display the File menu)
ALT+O (Display the Favorites menu)
MMC Console Window Keyboard Shortcuts
CTRL+P (Print the current page or active pane)
ALT+Minus sign (-) (Display the window menu for the active console window)
SHIFT+F10 (Display the Action shortcut menu for the selected item)
F1 key (Open the Help topic, if any, for the selected item)
F5 key (Update the content of all console windows)
CTRL+F10 (Maximize the active console window)
CTRL+F5 (Restore the active console window)
ALT+ENTER (Display the Properties dialog box, if any, for the selected item)
F2 key (Rename the selected item)
CTRL+F4 (Close the active console window. When a console has only one console window, this shortcut closes the console)
Remote Desktop Connection Navigation
CTRL+ALT+END (Open the Microsoft Windows NT Security dialog box)
ALT+PAGE UP (Switch between programs from left to right)
ALT+PAGE DOWN (Switch between programs from right to left)
ALT+INSERT (Cycle through the programs in most recently used order)
ALT+HOME (Display the Start menu)
CTRL+ALT+BREAK (Switch the client computer between a window and a full screen)
ALT+DELETE (Display the Windows menu)
CTRL+ALT+Minus sign (-) (Place a snapshot of the active window in the client on the Terminal server clipboard and provide the same functionality as pressing PRINT SCREEN on a local computer.)
CTRL+ALT+Plus sign (+) (Place a snapshot of the entire client window area on the Terminal server clipboard and provide the same functionality as pressing ALT+PRINT SCREEN on a local computer.)
Microsoft Internet Explorer Navigation
CTRL+B (Open the Organize Favorites dialog box)
CTRL+E (Open the Search bar)
CTRL+F (Start the Find utility)
CTRL+H (Open the History bar)
CTRL+I (Open the Favorites bar)
CTRL+L (Open the Open dialog box)
CTRL+N (Start another instance of the browser with the same Web address)
CTRL+O (Open the Open dialog box, the same as CTRL+L)
CTRL+P (Open the Print dialog box)
CTRL+R (Update the current Web page)
CTRL+W (Close the current window)
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