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How to track child process using strace?

... share | improve this answer | follow | answered Jun 11 '11 at 7:36 Je RogJe Rog ...
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Nginx location priority

... From the HTTP core module docs: Directives with the "=" prefix that match the query exactly. If found, searching stops. All remaining directives with conventional strings. If this match used the "^~" prefix, searching stops. R...
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Scala: what is the best way to append an element to an Array?

... You can use :+ to append element to array and +: to prepend it: 0 +: array :+ 4 should produce: res3: Array[Int] = Array(0, 1, 2, 3, 4) It's the same as with any other implementation of Seq. ...
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“Diff” an image using ImageMagick

How can I get the difference between two images? I have the original image. Someone has written on an exact duplicate of the original image. Now, I need to compare the original to the written on image and extract just the writing in image format. ...
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How do I get the MIN() of two fields in Postgres?

... LEAST(a, b): The GREATEST and LEAST functions select the largest or smallest value from a list of any number of expressions. The expressions must all be convertible to a common data type, which will be the type of the result (see Section 10.5 for details). NULL values in the list are ignored. ...
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Real-world applications of zygohistomorphic prepromorphisms

... Sharon Curtis and Shin-Cheng Mu have a Functional Pearl using zygomorphisms to find maximally dense segments (a generalization of maximum segment sums). Zygomorphisms are seemingly a good fit for sliding window problems once you are accustomed to them. ...
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Is there a way to use two CSS3 box shadows on one element?

I'm trying to replicate a button style in a Photoshop mock-up that has two shadows on it. The first shadow is an inner lighter box shadow (2px), and the second is a drop shadow outside the button (5px) itself. ...
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Select second last element with css

... In CSS3 you have: :nth-last-child(2) See: https://developer.mozilla.org/en-US/docs/Web/CSS/:nth-last-child nth-last-child Browser Support: Chrome 2 Firefox 3.5 Opera 9.5, 10 Safari 3.1, 4 Internet Explorer 9 ...
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iTerm2 keyboard shortcut - split pane navigation

I have been a long time user of the standard Mac Terminal. Decided to experiment with iTerm2 after hearing good things about it from my colleagues. ...
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how to view the contents of a .pem certificate

I am using Java keytool . I have exported a self-signed .pem certificate from my keystore. Is there a command to view the certificate details directly from the .pem file (not of the certificate in the keystore)? ...