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Defining and using a variable in batch file

I'm trying to define and use a variable in a batch file. It looks like it should be simple: 3 Answers ...
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Java current machine name and logged in user?

...it possible to get the name of the currently logged in user (Windows/Unix) and the hostname of the machine? 4 Answers ...
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\r\n, \r and \n what is the difference between them? [duplicate]

I need to ask about the difference in a string between \r\n , \r and \n . How is a string affected by each? 4 Answers ...
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Can't create handler inside thread that has not called Looper.prepare()

...You're calling it from a worker thread. You need to call Toast.makeText() (and most other functions dealing with the UI) from within the main thread. You could use a handler, for example. Look up Communicating with the UI Thread in the documentation. In a nutshell: // Set this up in the UI thread....
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How do I redirect output to a variable in shell? [duplicate]

... This captures the output of a command, but it does not use a redirect. If you actually need to use a redirect because of a more complex need, See my answer. Google brought you here, right? Why go somewhere else to find the answer you searched for? ...
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Mercurial for Beginners: The Definitive Practical Guide

....hgignore There are two syntax options available for file matching, glob and regexp. glob is unix-like filename expansion and regexp is regular expressions. You activate each by adding syntax: glob or syntax: regexp on a line by itself. All lines following that will use that syntax, until the next...
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Is it worth using Python's re.compile?

...ience running a compiled regex 1000s of times versus compiling on-the-fly, and have not noticed any perceivable difference. Obviously, this is anecdotal, and certainly not a great argument against compiling, but I've found the difference to be negligible. EDIT: After a quick glance at the actual P...
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How do I get the YouTube video ID from a URL?

...for this. var video_id = window.location.search.split('v=')[1]; var ampersandPosition = video_id.indexOf('&'); if(ampersandPosition != -1) { video_id = video_id.substring(0, ampersandPosition); } share | ...
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Display current date and time without punctuation

For example, I want to display current date and time as the following format: 5 Answers ...
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How can I read inputs as numbers?

Why are x and y strings instead of ints in the below code? 10 Answers 10 ...