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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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YouTube Video Embedded via iframe Ignoring z-index?

I'm trying to implement a horizontal multilevel dropdown navigation menu. Immediately below (vertically) the menu, I've got a YouTube video embedded via iframe. If I hover over one of the main level nav items in Firefox, the dropdown menu properly appears on top of the video. ...
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Can't connect to local MySQL server through socket '/tmp/mysql.sock

When I attempted to connect to a local MySQL server during my test suite, it fails with the error: 32 Answers ...
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Create Pandas DataFrame from a string

In order to test some functionality I would like to create a DataFrame from a string. Let's say my test data looks like: ...
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Understanding scala enumerations

I have to say I don't understand Scala enumeration classes. I can copy-paste the example from documentation, but I have no idea what is going on. ...
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AngularJS - $anchorScroll smooth/duration

Reading the AngularJS docs I haven't figured out if $anchorScroll can have a duration/easing option to smooth scroll to elements. ...
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What's the simplest way to subtract a month from a date in Python?

If only timedelta had a month argument in it's constructor. So what's the simplest way to do this? 20 Answers ...
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Angular.js ng-repeat across multiple tr's

I am using Angular.js for an application that uses hidden trs to simulate a sliding out effect by showing the tr and sliding down the div in the td below. This process worked fantastically using knockout.js when iterating over an array of these rows, because I could use <!-- ko:foreach --> a...
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How do I check for a network connection?

What is the best way to determine if there is a network connection available? 4 Answers ...
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Sound effects in JavaScript / HTML5

I'm using HTML5 to program games; the obstacle I've run into now is how to play sound effects. 18 Answers ...