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How to check if running as root in a bash script

I'm writing a script that requires root level permissions, and I want to make it so that if the script is not run as root, it simply echoes "Please run as root." and exits. ...
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How to get the last char of a string in PHP?

...o get the last character of a string. Say I have "testers" as input string and I want the result to be "s". how can I do that in PHP? ...
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Github Windows 'Failed to sync this branch'

I am using Github Windows 1.0.38.1 and when I click the 'Sync' button after committing, I get the error 17 Answers ...
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Explaining difference between automaticallyAdjustsScrollViewInsets, extendedLayoutIncludesOpaqueBars

...t. At the same time, you have more control over how it lays out its views, and that's done with those properties: edgesForExtendedLayout Basically, with this property you set which sides of your view can be extended to cover the whole screen. Imagine that you push a UIViewController into a UINavig...
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Adaptive segue in storyboard Xcode 6. Is push deprecated?

...pricated)" instead? It should; it does for me. I am using Xcode 6 beta 2 and to test I used the single view template (calling the pre made view controller in IB ‘VC_A’). I then added another view controller (‘VC_B’). I then added a button on VC_A to show VC_B and another from VC_B back to ...
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PostgreSQL - Rename database

...think it's better to keep table names restricted to just lowercase letters and underscore if possible! – Aswin Sanakan Feb 17 at 6:52 ...
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JavaScript arrays braces vs brackets

... The first and third are equivalent and create a new array. The second creates a new empty object, not an array. var myArray = []; //create a new array var myArray = {}; //creates **a new empty object** var myArray = new Array(); //cre...
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Add a CSS class to

...e is no comma! If you are altering a _form.html.erb partial of a scaffold and you want to keep the dynamic change of the button name between controller actions, DO NOT specify a name 'name'. Without specifying a name and depending on the action the form is rendered the button will get the .class =...
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What is the best method to merge two PHP objects?

We have two PHP5 objects and would like to merge the content of one into the second. There are no notion of subclasses between them so the solutions described in the following topic cannot apply. ...
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Ignore .pyc files in git repository

...n does not contain a slash /, git treats it as a shell glob pattern and checks for a match against the pathname relative to the location of the .gitignore file (relative to the toplevel of the work tree if not from a .gitignore file). · Otherwise, git treats the pattern as...