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Select unique or distinct values from a list in UNIX shell script

I have a ksh script that returns a long list of values, newline separated, and I want to see only the unique/distinct values. It is possible to do this? ...
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Is there a common Java utility to break a list into batches?

I wrote myself a utility to break a list into batches of given size. I just wanted to know if there is already any apache commons util for this. ...
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grep, but only certain file extensions

I am working on writing some scripts to grep certain directories, but these directories contain all sorts of file types. ...
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Setting CSS pseudo-class rules from JavaScript

I'm looking for a way to change the CSS rules for pseudo-class selectors (such as :link, :hover, etc.) from JavaScript. 12 ...
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How to Test a Concern in Rails

... The method you found will certainly work to test a little bit of functionality but seems pretty fragile—your dummy class (actually just a Struct in your solution) may or may not behave like a real class that includes your concern. Additionally if you're trying t...
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How to check if a path is absolute path or relative path in cross platform way with Python?

...arts with alphabet 'C:' or '\'. Does python has a standard function to check if a path is absolute or relative? 7 Answers ...
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What is the default initialization of an array in Java?

...derlying memory when allocating local variables (this allows efficient stack operations if needed) so to avoid random values the Java Language Specification requires local variables to be initialized. share | ...
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Why does JavaScript only work after opening developer tools in IE once?

IE9 Bug - JavaScript only works after opening developer tools once. 12 Answers 12 ...
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Proper use of beginBackgroundTaskWithExpirationHandler

I'm a bit confused about how and when to use beginBackgroundTaskWithExpirationHandler . 5 Answers ...
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Better way to check variable for null or empty string?

Since PHP is a dynamic language what's the best way of checking to see if a provided field is empty? 10 Answers ...