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how to find host name from IP with out login to the host

i need to find the host name of a UNIX host whose IP is known with out login to that UNIX host 11 Answers ...
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How does numpy.histogram() work?

While reading up on numpy, I encountered the function numpy.histogram() . 3 Answers 3...
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What does multicore assembly language look like?

Once upon a time, to write x86 assembler, for example, you would have instructions stating "load the EDX register with the value 5", "increment the EDX" register, etc. ...
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Editing dictionary values in a foreach loop

I am trying to build a pie chart from a dictionary. Before I display the pie chart, I want to tidy up the data. I'm removing any pie slices that would be less than 5% of the pie and putting them in a "Other" pie slice. However I'm getting a Collection was modified; enumeration operation may not exe...
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How do I get the time of day in javascript/Node.js?

I want to get 1 to 24 , 1 being 1am Pacific Time. 9 Answers 9 ...
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Add single element to array in numpy

I have a numpy array containing: 9 Answers 9 ...
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Add zero-padding to a string

How do I add "0" padding to a string so that my string length is always 4? 5 Answers 5...
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Quickest way to convert a base 10 number to any base in .NET?

I have and old(ish) C# method I wrote that takes a number and converts it to any base: 12 Answers ...
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How to normalize an array in NumPy?

I would like to have the norm of one NumPy array. More specifically, I am looking for an equivalent version of this function ...
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How to format strings in Java

Primitive question, but how do I format strings like this: 8 Answers 8 ...