Tutorial by Examples: r

Run the following as root: useradd username

Run the following as root: userdel username

Run the following as root: userdel -r username

groups More detailed information about user and group numerical IDs can be found with the id command.

groups username More detailed information about user and group numerical IDs can be found with id username.

This can be useful if you're writing a game or something that needs to execute a piece of code every a few seconds. import android.os.Handler; public class Timer { private Handler handler; private boolean paused; private int interval; private Runnable task = new Runnable ...

// World physics self.physicsWorld.gravity = CGVectorMake(0, -9.8);

MSBuild evaluates PropertyGroup, Choose and ItemGroup elements that are directly under the Project element before those that are in Target elements. Directly under the Project element, PropertyGroup and Choose elements are evaluated in the order in which they appear, and then ItemGroup elements a...

=SUMPRODUCT(IF(FREQUENCY(MATCH(A1:A100,A1:A100,0),MATCH(A1:A100,A1:A100,0))>0,1))

add_action( 'init', function() { // do something here } ); Using a function block to hook a set of instructions. With the init hook, the set of instructions will be executed right after wordpress has finished loading the necessary components.

function my_init_function() { // do something here } add_action( 'init', 'my_init_function' ); Using the name of the function to hook a set of instructions. With the init hook, the set of instructions will be executed right after wordpress has finished loading the necessary components. ...

n % 2 == 0 ? trace("n is even!") : trace("n is odd!"); // Assigning the evaluated expression to a variable var message = n % 2 == 0 ? "n is even!" : "n is odd!"; trace(message); Reference "If", Haxe manual

If different users need different datetime format then you may need to parse your incoming date string to actual date according to the format. In this case this snippet may help you. public class DateTimeBinder : DefaultModelBinder { public override object BindModel(ControllerContext control...

In this example you'll learn how to share a file with other apps. We'll use a pdf file in this example although the code works with every other format as well. The roadmap: Specify the directories in which the files you want to share are placed To share files we'll use a FileProvider, a class all...

Pulls the code from a certain specified file into another file where the call was made. E.g. inside example.php <h1>Hello World!</h1> Inside page.php // header code get_template_part('example'); // rest of page code Output: // header code <h1>Hello World</h1> /...

Any middleware registered as routeMiddleware in app/Http/Kernel.php can be assigned to a route. There are a few different ways to assign middleware, but they all do the same. Route::get('/admin', 'AdminController@index')->middleware('auth', 'admin'); Route::get('admin/profile', ['using' => ...

When the command-line syntax for an application is simple, it is reasonable to do the command argument processing entirely in custom code. In this example, we will present a series of simple case studies. In each case, the code will produce error messages if the arguments are unacceptable, and the...

Professionally made web applications don't expose the internal details of the server environment to the user. When you place an order at your retailer, you don't see (or have to type) https://mydealer.com:8443/Dealerapp/entryPage.html, but just mydealer.com, although the app server needs all the det...

Angular 1 is at heart a DOM compiler. We can pass it HTML, either as a template or just as a regular web page, and then have it compile an app. We can tell Angular to treat a region of the page as an expression using the {{ }} handlebars style syntax. Anything between the curly braces will be compi...

To start Alfresco: Switch to the alfresco user Change to the $ALFRESCO_HOME directory Run ./alfresco.sh start To stop Alfresco: Switch to the alfresco user Change to the $ALFRESCO_HOME directory Run ./alfresco.sh start