Tutorial by Examples: u

$ sleep 500 & [1] 7582 Puts the sleep command in background. 7582 is the process id of the background process.
$ jobs [1] Running sleep 500 & (wd: ~) [2]- Running sleep 600 & (wd: ~) [3]+ Running ./Fritzing & First field shows the job ids. The + and - sign that follows the job id for two jobs denote the default job and next candidate def...
$ fg %2 sleep 600 %2 specifies job no. 2. If fg is used without any arguments if brings the last process put in background to the foreground. $ fg %?sle sleep 500 ?sle refers to the baground process command containing "sle". If multiple background commands contain the string, it w...
Press Ctrl + Z to stop a foreground process and put it in background $ sleep 600 ^Z [8]+ Stopped sleep 600
$ bg [8]+ sleep 600 &
SELECT DATEDIFF(DAY, login_time, getdate()) UpDays FROM master..sysprocesses WHERE spid = 1
Since a Vimscript file is a collection of Command mode actions, the user needs to specify that the desired actions should be executed in normal mode. Therefore executing a normal mode command like i, a, d etc. in Vimscript is done by prepending the command with normal: Going to the bottom of the f...
If you are running a command that returns hundreds of lines, but your interest is just on the lines that contains the word <word>, you should definitely use grep! For example try running: ifconfig -a Check the output, that could be only a few lines or quite long, if you have a server with ...
This tutorial will guide you through the process from scratch. Please note some preliminary notes about this particular setup, useful in case that you already have some requested package: Is needed a version of php >=5.0 (I had troubles with php 7.0) Is requested any version of perl Is need...
You can create and configure build types in the module-level build.gradle file inside the android {} block. android { ... defaultConfig {...} buildTypes { release { minifyEnabled true proguardFiles getDefaultProguar...
An image can be created using image* functions, where * is the file format. They have this syntax in common: bool image___(resource $im [, mixed $to [ other parameters]] ) Saving to a file If you want to save the image to a file, you can pass the filename, or an opened file stream, as $to. If ...
Software and hardware prerequisites for installation of BizTalk Server (All versions) Software requirements 1. Development environment Below software tools are required for BizTalk environment, not all of them are needed, but having all might add some advantage for developing BizTalk applications...
1067 This is probably related to TIMESTAMP defaults, which have changed over time. See TIMESTAMP defaults in the Dates & Times page. (which does not exist yet) 1292/1366 DOUBLE/Integer Check for letters or other syntax errors. Check that the columns align; perhaps you think you are putting i...
In some cases basic validation is not enough. Angular support custom validation adding validator functions to the $validators object on the ngModelController: angular.module('app', []) .directive('myValidator', function() { return { // element must have ng-model attribute // o...
It may be helpful to include additional information with an exception, e.g. for logging purposes or to allow conditional handling when the exception is caught: class CustomError < StandardError attr_reader :safe_to_retry def initialize(safe_to_retry = false, message = 'Something went wro...
Almost all written text has punctuation marks which are outside the ASCII character set: dashes: the en dash –, and the em dash — Quotation marks: “quotes” rather than "quotes" The ellipsis…
You can allow role to access some action on resource by: $acl->allow('Administrator', 'products', 'create'); You can deny role to access some action on resource by: $acl->deny('Customer', 'categories', 'create'); You can check if role is allowed to some action on resource by using: $a...
By implementing Phalcon\Acl\RoleAware or Phalcon\Acl\ResourceAware you can use them as objects in Phalcon\Acl\Adapter\Memory::isAllowed(). // Create our class which will be used as roleName class UserRole implements Phalcon\Acl\RoleAware { protected $id; protected $roleName; publ...
Modifying the strings returned by the standard functions getenv(), strerror() and setlocale() is undefined. So, implementations may use static storage for these strings. The getenv() function, C11, §7.22.4.7, 4, says: The getenv function returns a pointer to a string associated with the matched...
OpenLayers 3 or as it is referred OL-3 is a Javascript Library for web mapping, so in order to use it you'll need to add it in your html: first add the ol.css file to use the map styling of OL-3 : then add the ol.js file : you can also download OL-3 from the official site www.openlaye...

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