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How to switch a user per task or set of tasks?

...ng theme that's in my ansible playbooks is that I often must execute a command with sudo privileges ( sudo: yes ) because I'd like to do it for a certain user. Ideally I'd much rather use sudo to switch to that user and execute the commands normally. Because then I won't have to do my usual post com...
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What is the difference between onPause() and onStop() of Android Activites?

From android doc here http://developer.android.com/reference/android/app/Activity.html , it said 'Activity comes into foreground' will call onPause() , and 'Activity is no longer visible' will call onStop() . ...
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difference between collection route and member route in ruby on rails?

What is the difference between collection routes and member routes in Rails? 4 Answers ...
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Simplest code for array intersection in javascript

... Use a combination of Array.prototype.filter and Array.prototype.includes: array1.filter(value => array2.includes(value)) For older browsers, with Array.prototype.indexOf and without an arrow function: array1.filter(function(n) { return array2.indexOf(n) !== ...
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Ternary operator is twice as slow as an if-else block?

... answer this question, we'll examine the assembly code produced by the X86 and X64 JITs for each of these cases. X86, if/then 32: foreach (int i in array) 0000007c 33 D2 xor edx,edx 0000007e 83 7E 04 00 cmp dword ptr [esi+4],0 00000082 ...
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System.Timers.Timer vs System.Threading.Timer

I have been checking out some of the possible timers lately, and System.Threading.Timer and System.Timers.Timer are the ones that look needful to me (since they support thread pooling). ...
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Git: cannot checkout branch - error: pathspec '…' did not match any file(s) known to git

...'m unable to checkout a branch that I had worked on earlier. See the commands below (note: co is an alias for checkout ): ...
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Assign output of a program to a variable using a MS batch file

...et VAR=%%i Note that the first % in %%i is used to escape the % after it and is needed when using the above code in a batch file rather than on the command line. Imagine, your test.bat has something like: for /f %%i in ('c:\cygwin64\bin\date.exe +"%%Y%%m%%d%%H%%M%%S"') do set datetime=%%i echo %d...
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How does OAuth 2 protect against things like replay attacks using the Security Token?

As I understand it, the following chain of events occurs in OAuth 2 in order for Site-A to access User's information from Site-B . ...
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Spring: Why do we autowire the interface and not the implemented class?

...o use. As long as there is only a single implementation of the interface and that implementation is annotated with @Component with Spring's component scan enabled, Spring framework can find out the (interface, implementation) pair. If component scan is not enabled, then you have to define the bean...