5 Deadly linux commands list

Linux today is well known and well reputed one of the most powerful operating system. Linux user can perform numerous such tasks that awindows or Mac user can’t even imagine.

Sometimes Linux can go extreme upto the extent that it can do serious damage to the system.

Linux system dont even ask user for confirmation once the command is given and simply performs its task.
hardware of your computer within a few seconds.

 Because of these harmful activities of linux it is recommended to use it only if you are good at giving commands and have in depth  knowledge oflinux commands list.

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5 Deadly linux commands list that can Destroy one’s System

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1. Command > rm -rf / = It will Delete Everything

Explanation : It is a combination of three keywords.

First is : rm It will remove all the files followed by this command.

Second is : -rf This will run rm command in more effective way and will remove everything ( all files and folders inside the specified folder )without asking confirmation from the user.

Third is : / This will start removing the data from the root directroy and will delete everything from the computer including the data of removable media.

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2. Command > :(){ :|: & };: = Shell function that gets repliacated.

This command creates a shell function , which once get initialized starts to create multiple copies of itself.It results in taking quickly all the memory and power of CPU.It makes computer freeze or not responding. This is also known as Denial Of Service Attack.

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3. Command > mkfs.ext4 /dev/sda1 = This command will format the hard disk

Explanation : This command is again composed of two keywords.

First is : mkfs.ext4 : This part of command will create a new ext4 file system on following device where this command will get executed.

Second is : /dev/sda1 ;This part of command specifies the 1st partition on the first hard disk which is probably in use by the user. Similarly, This Command > mkfs.ext3 /dev/sdb2 will Format the second partition on the second hard disk with ext3 File system.

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4. Command > /dev/sda – Write Any content Directly to a Hard Drive.

Explanation : This command will execute normally as other commands in linux do. But output of this command will directly be sent to the file system (NTFS or FAT ) of the Hard Drive. It will result into damaging the file system of the computer.

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5. Command > mv ~ /dev/null – Beware it Will Move your Home Directory To Black hole.

Explanation : Moving any of your content and data to following path : /dev/null means you want to destroy it.

It means /dev/null is a black hole where once anything sent , can not be recovered back.

Note:Many of these commands will only be dangerous if they’re prefixed with sudo on Ubuntu – they won’t work otherwise. On other Linux distributions, most commands must be run as root.

So these were 5 Deadly linux commands list that you must never try them on your system

Resize Image without loosing Quality

People hate to visit websites which require more time for loading. So one should always seek to improve the webpage load time, so to do so you have to look at many things like loading sources, page cache, media files etc. One among such media file is images, adding beauty to your page, but at the same time, it is regarded as the most bulky resources which takes much time to load on the page, thereby causing inconvenience to the visitors.

But one can improve the page load time by cutting the size of an image to a significant amount. But even resizing the image without any proper knowledge may be troublesome as you may lose the quality it had. Though photoshop provides a nice feature to save the original quality of the pic, it is not preferred much as it’s too expensive to purchase the photoshop application for desktop or web version. So here I’m going to provide you with free online tools to Resize Image without loosing Quality

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Web Based Tools to Resize Image without loosing Quality

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1.Kraken.io :

JPEG, PNG, GIF, SIV are some of the image formats that can be compressed with this online application. This reduces the image to a quite considerable point without losing the image size.

This application is also available in Chrome and Firefox extensions

2.Imageoptimizer.net:

After uploading the image from your computer, give the size of the image and quality you wish to have after processing. This provides only some control of the output and compression ratio But Greatly Helps to Resize Image without loosing Quality.

3.Smush.it:

Smush.it is the best and popular online application you can have to compress images. It is present with an up-loader as well as URL box to have the image. In this you will not be provided with the ‘enter’ option to enter the image quality as that of previous one because it automatically optimizes the image by compressing it to a limit.

4.Compressjpg.com & Compresspng.com :

I would suggest you to have these application, for more control of the image quality. A slider appears as soon as you upload an image to auto control the quality of the last image. A preview panel is provided for showcasing the changes according to the quality slider change. So before downloading the image you can have the review of your final image. This application is available on different domains for JPG and PNG images.

5.Punypng.com :

This application is available to compress the PNG files. Upload an image and you can get a compressed size of the image. Besides this, tinypng.com , a quick tool to compress the PNG images to the best level without affecting the image quality.

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Desktop tool to Resize Image without loosing Quality

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If you need a Desktop tool to do this task then i would suggest you to have PNG Gauntlet as your first choice, You will need .Microsoft Net Framework 4.0 to run this tool on your Windows.

You won’t Face any difficulty in Using this tool as it is very User Friendly. While Optimizing the images PNG Gauntlet will show you older size and Optimized size of the image. this Program is not that Fastest at it work but Usefull.

Windows Explorer Hack tricks

Every Windows User is well aware of What Windows Explorer is. Windows Explorer is also known as File Explorer particularly in Windows 8. Window’s File Explorer is something we all Use on daily basis. So why not try to make it more Productive and Efficient with some Cool Hacks. Earlier We Saw How to Get Back Start Button In Windows 8

Here in this article i have listed 5 Best Windows Explorer Hacks that you Must be aware of to make your Files management Experience more easy and efficient.

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5 Best Windows Explorer Hacks

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1) Edit Send to Menu: Windows By Default allows you to Send any file or folder to Desktop, or Compress it or Mail it to the Recipient of your Choice, We Can Edit this Send to Menu to display things that you want to display, you can add or delete anything from this menu Easily.

Navigate to C:\Users\*Username*\AppData\Roaming\Microsoft\Windows\SendTo.
Appdata Folder is Hidden by Default, First unhide it by Clicking on View>Option>Folder option>View> Check show hidden files,folders and Drives.
OR
You Can alternatively open Send to Folder with Run Command, Press Win+R key to open up Run Dialog, and type in shell:sendto and press Enter.

There You Can see Some Similar Files That were showing you in the Send to Menu. To Remove any Option you can delete that File from Send to folder. On the other hand to add Something to Send to Menu, Just Copy the folder that you want to show up in Send to Menu and Paste it there in that Folder. Now Check the Send to menu to See the Changes. All Done !!!

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2) Add Copy to and Move to Folder options :We can add “Copy to Folder” and “Move to Folder” to your Context Menu. Windows Don’t Provide these options by default but we can add with a simple Registry hack.

To add Copy to and move to  folder Option : Click here to Download Add_Move_To_Folder.reg File,

And Click here to DownloadAdd_Move_To_Folder.reg file. These files are  small regsitry file for windows that will help you to add Copy to folder and Move to Folder option. Once downloaded, Double click on it, Click Run when Prompted. then you may be asked to click on yes and ok Couple of times.

When Everything is done, Right Click on any folder and check if its Showing Move to and Copy to Folder options. You Can see Move to and Copy to Folders are now added to your Context menu like mine.

Bonus Noob Tip: Hold Down CTRL key , Drag and drop Source file to Destination to Copy it. And Hold down SHIFT key, Drag and Drop Source file to Destination to Move it.

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3) Change Default Folder: Whenever you Launch Windows Explorer in windows 7/8, it opens up Library folder, but may it its not that usefull for us or we need some other folder to open up when we Click on taskbar’s Windows Explorer Shortcut. So in this hack we will Change Windows Default Folder  to our Downloads Folder instead of library.

• To Start with we will Right click on theWindows Explorer or File Explorer for Win 8 Users from the task bar icon. A list will show up, Now again Click on Windows Explorer(File Explorer) and Click on Properties.

• You can see a Dialog Box appears, There you Can see target path is somewhat like AppData\Roaming\Microsoft\Windows\Librariesall we have to do is change this path to your desired folder that you want to open up everythime you launch file explorer.

• As here we are going to Change it to Download Folder we will change the path to C:\Users\*Username*\Downloads. ClickOK and we have successfully changed the path now.

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4) Add tabs to File manager: We will be Using a Third Party tool Which is QTTabBar (2.9 mb) to Get advantage of Tabs, just like we have tabs in our Browsers. It not only Facilitates with the tabs but also provides many other usefull features that shows up in you file explorer

You will be asked for a Reboot in order to make changes after the installation process Completes. you might like to see how to disable windows restart after windows update or after installing any software.

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5)Better File Copying Speed: Windows have made some efforts in windows 8 to improve Copying Speed. Copying FIles is better in windows 8 as compared to older versions but yet its slow and many times it Conflicts, so We will be UsingTeraCopy to Takeup this task and its Fast and Effective. What it does is, it  Eliminates windows Default File-Copy Dialog  and gives us a better one.

After Installing TeraCopy, Whenever you Will Copy and paste, TeraCopy will Come into Action and do the Task for you much Faster. it also adds itself to Context Menu as an Option if in Case you prefer to Use it only when you Want to .

With this it Concludes my List of Best Windows Explorer Hacks, Which i have Tried and have helped me. if you know any other Trick of Windows Explorer then Feel free to Add a Comment Below.

Create Windows 8 Bootable USB

There are number of ways for installing an operating system to your computer. Most of the people do it by using bootable CD/DVD of windows. But we really don’t need to install windows very frequently and because of this , it is so difficult to put this bootable disc on safe place and remember where you have kept it when needed. Here are steps to make Windows 8 Bootable USB.

Also , number of times when you are installing window you see some error saying that some of the necessary installation file is missing from the disc and setup can not be continued. All this happens because of scratches present on disc surface since disc is too old to use.

Apart from all these , Not all Computers have working CD or DVD Drives. This creates a big issue for those who want to install operating system via Disc method,So today here i bring a easy tutorial to Create Windows 8 Bootable USB .

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How to Create Windows 8 Bootable USB

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I here Assume that you already have ISO image of Windows 8 or 7 of which you want to Create Bootable Pendrive.

Step 1 :Download Windows 7 USB/DVD download tool and install it.

This tool is available for free from Microsoft Corporation as well so you can get it from there too. Despite its name, this tool works with Windows 8 ISOs as well. You can use this tool for any version of Windows.

Step 2:After downloading and installing the tool, Run it , now you need to Browse and give the path where the ISO  file is located in your computer.

Step 3:Now select whether you want to create a bootable DVD for windows or you want it to be abootable pendrive. Here you need to select USB device because you want to make bootable pendrive.

Step 4: Browse and select the pendrive which you want to make bootable. Make sure that the pendrive has atleast 4 gb free . Now click onBegin Copying.

Step 5:Once you begin copying , the tool will start creating bootable Windows 8 USB installer flash drive using the Windows 8 ISO. Let this process complete , lastly when you see the message “Bootable USB Device created successfully”, you can restart your PC and boot from the USB drive.

So this was my Quick tutorial on how to Create Windows 8 Bootable USB, Hope this will help you.

Format pendrive using cmd

                               Formatting is a valuable and essential tool when dealing with any type of storage disk and can help to solve a lot of errors and headaches. But what do you do if your USB flash drive needs to be formatted but, every time you try through the property menus it comes up with an error, or won’t even recognise the drive properly at all. Don’t despair because here is something you can do.

Format pendrive using cmd  is a common process that may need to be undertaken quite frequently, but unless you have gone through this procedure before it can be a mine field. The last thing you want is to finish the process and end up with an unusable pendrive . Here is a quick step by step guide to Format pendrive using cmd

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Steps to Format pendrive using cmd

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This guide formats your flash drive as FAT32, to format as NTFS simply substitute the term in the command box. FAT32 is the recommended formatting style by this guide but many do prefer NTFS. Follow the Below steps to Format an unformatable Pendrive.

Step 1. Turn on computer as normal

Step 2. Once you are in your desktop insert Pendrive into USB port

Please note: if you know the letters associated with your disk locations or can use a utility such as disk part to list this information then skip steps 3 and 4

Step 3. Go into my computer (accessible from the start menu or desktop) and look down the navigation panel on the left hand side, this lists down to the popular and root menu folders and locations on your computer.

Step 4. Your Pendrive should be listed in one of these locations, it may be referred to by brand, as portable storage or something similar. Next to this label will be a letter,

for example “G: removable storage device ” if the device does not show up you may need to test the port to find the letter with another USB device. This letter needs to be written down or remembered in order to complete this process.

Step 5. Go to the windows start menu, click start or the Windows symbol depending on your edition of Windows, then click run.

Step 6. Type cmd into the run dialog box and click OK, this is to start the command prompt window from which you will be able to choose your format style and name your drive.

Step 7. Then the command prompt window is opened and you will need to type ” Format G: ” 

if you want to Format it as FAT32  then type ” Format G: /FS: FAT32 ”

Step 8. The G in this instance refers to our example Pendrive location, instead you would enter the letter that you remembered or wrote down from the my computer side panel
After you have typed the above command press enter.

Step 9. Here, you will be asked to press enter again and then to give a name for your drive. Follow these prompts then click on enter again.

You have completed the process of Formating pendrive using cmd; go back into my computer to check that the formatting has been completed successfully.

How to Enable Copy paste in CMD – Windows

By Default Windows do not allow users to Copy text and Paste it in Command prompt Or Copy text from Command prompt and paste it elsewhere. But there is an option in CMD itself to enable Copy & Paste Text in Windows Command Prompt.

Today in this tutorial we will learn how to Enable Copying and Pasting Texts in Windows Command prompt. One of the main advantage of this will be that you can copy any command that you find on the internet or from any word/excel file and paste it directly in CMD and execute that command just like that.

How to Enable Copy Paste in CMD

Step 1: Open CMD, Just type CMD in search or Press Win + X key to select Command Prompt.

Step 2: Right Click on the Title of the CMD window and Select Properties just like its shown in the below Picture

Step 3: You will see a Pop up Window coming up, Now on the Right hand side, Under Edit Options, Just Check Quick Edit Mode and click OK

Step 4: Everything is Done, Now just Copy any Text from Here or Anywhere else Using CTRL + C keys and just Right click using your mouse on CMD. You will see that the text is been pasted automatically in CMD. Please Understand that Using CTRL + C to Copy text is Important.

Likewise if you wish to Copy Text from CMD to paste elsewhere then Just Select the Text in CMD and Again just Right Click with the mouse. Your Text is Copied and ready to Paste it in any Document you want.

This Doesn’t Limit you to just Text you can even copy File or Folder path and paste it in CMD. Everything that you have to type manually can be copied from somewhere and pasted directly to CMD with this small Tweak

So this was just a small Tip I wanted to Share with my Readers so that you don’t have to Type any long Command in CMD which if typed incorrectly can cause errors. I hope this will help some Of you.

web browsing tricks

Automatically add www. and .com to a URLYou can shave off a couple of seconds typing in a URL by simply click CTRL + Enter after you type the name of the site. Need .net instead of .com, press CTRL + Shift + Enter instead.

Jump to address bar There are a number of ways to jump right to the address bar from anywhere in browser. Pressing CTRL + L, F6, and ALT + D all accomplish this goal.

Bring back a closed tab We covered this already, but it's super useful. Accidentally closed a tab? Simply press CTRL + Shift + T to reopen the most recently closed tab and get back to what you were doing.

Use private browsing The uses for not having cookies and history saved are obvious for certain activities, you know, like shopping for gifts on a shared computer (of course!). Pressing CTRL + Shift + N will launch a new private in Chrome, CTRL + Shift + P will do it in Firefox and Internet Explorer.

Cycle through open tabs Pressing CTRL + TAB while in a browser will flip between each one. This can be much faster than moving the mouse and clicking on a tab. CTRL + NUM (1, 2, 3, 4, n..) will also take you to certain tab in that numeric order.