Command prompt tricks

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Command Prompt is a command line interpreter application available in most Windows operating systems.It is a input field in a text-based user interface screen for an operating system or program.It is also called Windows Command Processor but is also sometimes called the command shell or cmd prompt, or even referred to by its filename cmd.exe.

cmd is easy to use and you can perform many operations in it.Here are top tricks you must know. Before knowing the tricks lets see how to open cmd in windows 10.

1.Go to search the web and windows

2.Enter cmd and select it.

Now lets see some usefull cmd tricks.

1.Change the name of title bar.

You can give any title to cmd just give the command title and with it any title you want to give.

Ex:- >title xyz

2.Copying text in cmd.

You can’t copy paste by right clicking and then selecting copy paste this feature is not present in cmd.

a)First select the text

b)Then use keyboard shortcuts CTRL+C(copy) and CTRL+V(paste).

3.Opening command prompt inside a folder.

Suppose you want to execute a file in a folder what you will do is change the directory from command prompt well there is a trick that you can directly open command prompt inside a folder.

Go to desired folder.
Hold shift and right click and you will see an option open command window here click it and your are done.

4.Change the Looks.

Bored with default looks you can customize command prompt.

5.Check ip address.

You can find/check ip address of any website using command prompt just give the command nslookup xyz.com.

6.See PC drivers list.

You can see all the drivers that is installed in your system just give the command driverquery.

7.Scanning System files.

You can scan the system files using command prompt.It will scan and repair the files.Just type sfc/scannow.Scanning speed depends on your system speed.

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Turn your browser into Notepad.

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Notepad is a simple text editor for Microsoft Windows and a basic text-editing program which enables computer users to create documents.We all need notepad to note down the things which we wanna use later but somethings while surfing net you found something you don’t need to save you just want to note it down . So here is the trick to turn your browser into notepad with simple one line code.

here is the code:-

data:text/html, <html contenteditable>

Just copy the code and paste it in browser’s URL bar and you are done!!!

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Mobile Tricks

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A mobile phone that performs many of the functions of a computer, typically having a touchscreen interface, Internet access, and an operating system capable of running downloaded apps is known as smartphones. The world is going crazy about smartphones and in present scenario approx. 2.32 billion people use it. There are many such things about smartphones that most population doesn’t have the knowledge. Here you will find such tricks of smartphones that will helpful and will reduce your effort.

1.Extend battery life with low power mode.

If your phone is running on iOS9, go to Settings > Battery > Low Power Mode. By going into Low Power Mode, non-essential tasks are disabled, giving you up to FOUR more hours of battery life.

power

2.Back-up your data.

Sync and store all your important photos, media, contacts, and even text messages. Even in case you delete a photo or you reset your phone you can still recover all your important data.

backup

3.Aeroplane mode for speed charging.

Everyone wants their phone to charge quickly ,by putting it in aeroplane mode your mobile phone will charge quickly as it will use less battery life.

aero

4.Click pictures with volume button.

You can take photos using the volume buttons whilst in the camera phone.

5.Taking Screenshots

Sometimes we want to save the screen as it appears taking screen in smartphones is very easy though you can do it using various apps available on playstore but it can be done easily you just need to press two buttons same time i.e. power and volume down .

save

7.Download web images.

If you’ve seen one of those funny photographs on the internet, long-pressing on it lets you download it to your phone – and it’ll pop up in your Gallery for easy sharing.

8.Multiple Gmail accounts.

Android added support for multiple Gmail accounts. Add a new internet identity to your phone by opening the Gmail app, then pressing Menu > Accounts > Add Accounts.

gmail

9.Custom caller tone.

If you like talking to people, the same screen lets you allocate a specific custom ringtone to each caller stored in your Contacts directory.

10.Here are top 10 android codes that you can use.

download

To display IMEI Number *#06#
To display RAM Memory version *#*#3264#*#*
To display FTA SW version *#*#1111#*#*
To display FTA HW version *#*#2222#*#*
To display Touchscreen version *#*#2663#*#*
To test Bluetooth *#*#232331#*#*
To test secret GPS *#*#1472365#*#*
To launch Service Mode *#*#197328640#*#*
To Restore Factory Settings #*#7780#*#*
To Format phone *2767*3855#

11.Enable Developer Mode.

Navigate to Settings > About phone and tap on your phone’s build number seven times.A message will pop up saying “Congratulations, you are now a developer”.

develper

12.Hidden Game.

You can play games on your mobile by downloading but there is a hidden game that you can enjoy just go Settings > About phone and tap the device’s version number several times.Enjoy the game.

game

13.Plug mouse and keyboard to your phone.

You can plug mouse and keyboard to your device and use it like PC.

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All Type of Calculators.(online)

Really an amazing site for all who are having problem in any sort of calculation . All you need is

http://www.calculatord.com/

In this site variety of online calculators are available .

Thank you.

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Hidden games in Google.

Feeling bored try this games on Google that are hidden .

1. T-Rex Run.

When you see there is no internet connection or unable to connect to the internet you can play this game called T-Rex Run.

2. Pac-man

The custom Pac-Man game appeared as a Google “doodle” on May 21, 2010. You can play it just Google pac-man

3. Breakout

To access this classic, type “Atari Breakout” into Google’s Image Search.

4. Zerg Rush

Search “Zerg Rush” in Google and prepare yourself .

5. Snake

To play, punch in “Google Snake Game,” and click on the top result.

Happy Gaming 🎮

Thank you.

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Matrix Multiplication

Found this amazing site for matrix Multiplication .

An interactive matrix multiplication calculator for educational purposes.

matrixmultiplication.xyz

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Units of Computer Memory Measurements

What is the memory measurement unit of Computer?

You all know that a computer only understands the binary language.The information stored in the computer is in the form of 0`s and 1`s called bits.
In computing and telecommunications, a unit of information is the capacity of some standard data storage system or communication channel, used to measure the capacities of other systems and channels. In information theory, units of information are also used to measure the information contents or entropy of random variables.

The most common units are the bit, the capacity of a system which can exist in only two states, and the byte (or octet), which is equivalent to eight bits. Multiples of these units can be formed from these with the SI prefixes (power-of-ten prefixes) or the newer IEC binary prefixes (binary power prefixes). Information capacity is a dimensionless quantity.

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Ctrl+Alt+Del

Control–Alt–Delete (often abbreviated to Ctrl+Alt+Del, also known as the “three-finger salute”)

is a computer keyboard command on IBM PC compatible computers, invoked by pressing the Delete key while holding the Control and Alt keys: Ctrl+Alt+Delete. The function of the key combination differs depending on the context but it generally interrupts or facilitates interrupting a function. For instance, in pre-boot environment (before an operating system starts) or in DOS, Windows 3.0 and earlier versions of Windows or OS/2, the key combination reboots the computer. Starting with Windows 3.1, the command invokes a task manager or security related component that facilitates ending a Windows session.

On some Linux-based operating systems including Ubuntu and Debian, Control+Alt+Delete is a shortcut for logging out.

On Ubuntu Server, it is used to reboot a computer without logging in.

Ctrl+Alt+Delete is not a keyboard shortcut on macOS platforms. Instead, ⌘ Command+⌥ Option+Esc can be used to bring up the Force Quit Menu. However, in the macOS Server logon screen, pressing Control+⌥ Option+Delete (as the Option key is the equivalent of Alt key on a Mac keyboard) will show an alert saying “This is not DOS.”Control+⌘ Command+Power immediately restarts the computer.

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Version Control

About Version Control

What is “version control”, and why should you care? Version control is a system that records changes to a file or set of files over time so that you can recall specific versions later. For the examples in this book you will use software source code as the files being version controlled, though in reality you can do this with nearly any type of file on a computer.

If you are a graphic or web designer and want to keep every version of an image or layout (which you would most certainly want to), a Version Control System (VCS) is a very wise thing to use. It allows you to revert files back to a previous state, revert the entire project back to a previous state, compare changes over time, see who last modified something that might be causing a problem, who introduced an issue and when, and more. Using a VCS also generally means that if you screw things up or lose files, you can easily recover. In addition, you get all this for very little overhead.

Local Version Control Systems

Many people’s version-control method of choice is to copy files into another directory (perhaps a time-stamped directory, if they’re clever). This approach is very common because it is so simple, but it is also incredibly error prone. It is easy to forget which directory you’re in and accidentally write to the wrong file or copy over files you don’t mean to.

To deal with this issue, programmers long ago developed local VCSs that had a simple database that kept all the changes to files under revision control.

Figure 1. Local version control.

One of the more popular VCS tools was a system called RCS, which is still distributed with many computers today. Even the popular Mac OS X operating system includes the rcs command when you install the Developer Tools. RCS works by keeping patch sets (that is, the differences between files) in a special format on disk; it can then re-create what any file looked like at any point in time by adding up all the patches.

Centralized Version Control Systems

The next major issue that people encounter is that they need to collaborate with developers on other systems. To deal with this problem, Centralized Version Control Systems (CVCSs) were developed. These systems, such as CVS, Subversion, and Perforce, have a single server that contains all the versioned files, and a number of clients that check out files from that central place. For many years, this has been the standard for version control.

Figure 2. Centralized version control.

This setup offers many advantages, especially over local VCSs. For example, everyone knows to a certain degree what everyone else on the project is doing. Administrators have fine-grained control over who can do what; and it’s far easier to administer a CVCS than it is to deal with local databases on every client.

However, this setup also has some serious downsides. The most obvious is the single point of failure that the centralized server represents. If that server goes down for an hour, then during that hour nobody can collaborate at all or save versioned changes to anything they’re working on. If the hard disk the central database is on becomes corrupted, and proper backups haven’t been kept, you lose absolutely everything – the entire history of the project except whatever single snapshots people happen to have on their local machines. Local VCS systems suffer from this same problem – whenever you have the entire history of the project in a single place, you risk losing everything.

Distributed Version Control Systems

This is where Distributed Version Control Systems (DVCSs) step in. In a DVCS (such as Git, Mercurial, Bazaar or Darcs), clients don’t just check out the latest snapshot of the files: they fully mirror the repository. Thus if any server dies, and these systems were collaborating via it, any of the client repositories can be copied back up to the server to restore it. Every clone is really a full backup of all the data.

Figure 3. Distributed version control.

Furthermore, many of these systems deal pretty well with having several remote repositories they can work with, so you can collaborate with different groups of people in different ways simultaneously within the same project. This allows you to set up several types of workflows that aren’t possible in centralized systems, such as hierarchical models.

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