creating an in-house dropbox In this article we try to mimic the great Dropbox. This part of the series deals with setting up basic file synchronization in Linux. Create a Central Repository Create a folder on a large hard drive or raid your main computer/server For example: mkdir /meda/drobo/inhouseDropbox On the repository machine install Unison sudo apt-get install unison On the local machine connect via SSH and test that the install went ok ssh yourhostname unison -version You should see something like, “unison version 2.27.57“. Create a file in your repository directory: > test.txt Install Unison on the Local Machine For a Debian based system do: Make a folder in your home directory or wherever you want: mkdir /home/nixtutor/inhouseDropbox Then run Unison: unison inhouseDropbox/ Note the double slash after the hostname. You will be greeted with a message saying that this is the first time it has detected changes go ahead and hit the space bar. Setup Unison If should look something like:
30 Windows 7 Hotkeys: Ultimate Guide Apart from so many new features in Windows 7, Microsoft has also added new hotkeys to give individuals better control over their operating system. We have covered 30 hotkeys for Windows 7 which we believe everyone should know about. Master them all to increase your daily productivity. Windows + Up Arrow It is used to maximize the current window which is in focus, whether it is a windows explorer, a web browser, or any other application. Windows + Left Arrow Adjusts the current window to the left side and hence the window will cover almost half of the desktop space. Windows + Right Arrow It will adjust the current window to the right and thus it will cover half of the desktop space on the right. Windows + Down Arrow Minimizes the windows to the Task bar. Windows + Space All windows become transparent so you are able to see your desktop. Windows + T Shows the thumbnail preview of the running applications. Windows + P Windows + (+ / -) (Add/Minus) Shift + Click a Taskbar item Windows + F Windows + X
Free Backgrounds-Free background.com C++ Programming/Exercises/Iterations - Wikibooks, open books for an open world - StumbleUpon Iterations[edit] Solutions requirements Solutions must: Use only standard C++.Be compilable.Be in accordance to general coding practices. (no esoteric demonstrations are required) and should: Handle error situations, even if behavior is not defined. Please do not add solutions that are 99% similar to another that is already present, if it is an improvement just add it to the existing solution. EXERCISE 1[edit] Write a program that asks the user to type an integer and writes "YOU WIN" if the value is between 56 and 78 (both included). int main() {int i; cout << "Type all numbers between 58 and 73: " << endl; cin>>i; if (i>=58 && i<=78) { cout << "YOU WIN" << i << endl; else cout<<"YOU LOSE!" EXERCISE 2[edit] Write a program that asks the user to type all the integers between 8 and 23 (both included) using a for loop. Solution Alternative solution by Bartosz Radwanski Alternate solution Solution in C Another alternate solution Failed solutions (correct them as an extra exercise) EXERCISE 3[edit]
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Tips for Linux Explorers - StumbleUpon In Pictures: Online computer tutorials based on pictures. Free. How Computers Boot Up : Gustavo Duarte The previous post described [motherboards and the memory map] memory-map in Intel computers to set the scene for the initial phases of boot. Booting is an involved, hacky, multi-stage affair - fun stuff. Here’s an outline of the process: Things start rolling when you press the power button on the computer (no! do tell!). If all is well the CPU starts running. Most registers in the CPU have well-defined values after power up, including the instruction pointer (EIP) which holds the memory address for the instruction being executed by the CPU. The motherboard ensures that the instruction at the reset vector is a jump to the memory location mapped to the BIOS entry point. The CPU then starts executing BIOS code, which initializes some of the hardware in the machine. After the POST the BIOS wants to boot up an operating system, which must be found somewhere: hard drives, CD-ROM drives, floppy disks, etc. The BIOS now reads the first 512-byte sector (sector zero) of the hard disk.
Bootdisk.Com How Browsers Work: Behind the Scenes of Modern Web Browsers Web browsers are the most widely used software. In this primer, I will explain how they work behind the scenes. We will see what happens when you type google.com in the address bar until you see the Google page on the browser screen. The browsers we will talk about There are five major browsers used on desktop today: Chrome, Internet Explorer, Firefox, Safari and Opera. The browser's main functionality The main function of a browser is to present the web resource you choose, by requesting it from the server and displaying it in the browser window. The way the browser interprets and displays HTML files is specified in the HTML and CSS specifications. Browser user interfaces have a lot in common with each other. Address bar for inserting a URIBack and forward buttonsBookmarking optionsRefresh and stop buttons for refreshing or stopping the loading of current documentsHome button that takes you to your home page The browser's high level structure The browser's main components are (1.1): Syntax:
Paul Grosss Blog - Useful unix tricks - part 2 Update (2/20/09): Check out Useful unix tricks – part 3 and Useful unix tricks – part 4 I covered a bunch of unix command line tricks in my previous blog post: Useful unix tricks. Here are some more. Learn vi Even if you prefer another text editor (such as emacs), it is worth your time to learn vi. vi is installed on every unix box, whereas emacs and others are not. Furthermore, many other unix tools use vi shortcuts (such as less), so learning the shortcuts will help out with other commands. Use less instead of tail I find that I often want to see the end of a file. % tail /var/log/messages Inevitably, I realize that I need more than the last 10 lines. % tail -n 100 /var/log/messages However, an easier approach is to use less to display the whole file and then jump to the bottom (using Shift+g): % less /var/log/messages Shfit+g Now, I can scroll up and down at will. mkdir -p creates nested directories By default, mkdir will only create a top level folder. % mkdir -p some/nested/folder