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Quick unix command to display specific lines in the middle of a file?

Trying to debug an issue with a server and my only log file is a 20GB log file (with no timestamps even! Why do people use System.out.println() as logging? In production?!) ...
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How can I handle R CMD check “no visible binding for global variable” notes when my ggplot2 syntax i

... warning: aes does while aes_string doesn't define positional parameters x and y. – topchef Oct 18 '13 at 16:50 6 ...
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Why do we usually use || over |? What is the difference?

... If you use the || and && forms, rather than the | and & forms of these operators, Java will not bother to evaluate the right-hand operand alone. It's a matter of if you want to short-circuit the evaluation or not -- most of the ti...
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Creating an Android trial application that expires after a fixed time period

... run the app save the date/time to a file, database, or shared preferences and every time you run the app after that check to see if the trial period has ended. This is easy to circumvent because uninstalling and reinstalling will allow the user to have another trial period. The second approach is...
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How to get the request parameters in Symfony 2?

I am very new to symfony. In other languages like java and others I can use request.getParameter('parmeter name') to get the value. ...
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PHP Fatal error: Cannot redeclare class

... AaronLS's answer is much higher rated, and you can find it way down here. – qris Oct 7 '14 at 11:48 ...
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'id' is a bad variable name in Python

...emoved it. What a poorly named method! A generic, common name used in thousands of places (where context gives meaning). So someone decided to use it as a global name where there is no context? – Basic Jul 26 '16 at 14:27 ...
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How to center a label text in WPF?

...text. To control the alignment you can use a TextBlock instead of a label and set the TextAlignment attribute to whatever you need. – Paul Stegler Sep 21 '13 at 7:20 ...
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Using pickle.dump - TypeError: must be str, not bytes

I'm using python3.3 and I'm having a cryptic error when trying to pickle a simple dictionary. 2 Answers ...
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How can I list all commits that changed a specific file?

...r solutions include git log path (without the --follow). That approach is handy if you want to track e.g. changes in a directory, but stumbles when files were renamed (thus use --follow filename). share | ...