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Best way to detect Mac OS X or Windows computers with JavaScript or jQuery

So I'm trying to move a "close" button to the left side when the user is on Mac and the right side when the user is on PC. Now I'm doing it by examining the user agent, but it can be too easily spoofed for reliable OS detection. Is there a surefire way to detect whether the OS on which the browser i...
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Python: How to create a unique file name?

... edited Aug 6 '17 at 2:45 Kostanos 7,36633 gold badges3737 silver badges5858 bronze badges answered Jun 2 '10 at 21:12 ...
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Why is creating a Thread said to be expensive?

...tem calls need to be made to create / register the native thread with the host OS. Descriptors need to be created, initialized and added to JVM-internal data structures. It is also expensive in the sense that the thread ties down resources as long as it is alive; e.g. the thread stack, any objects...
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Can't update Macports (with Mac OS X Mavericks)

After upgrading Mac OS X to newest version Mavericks, I attempted to selfupdate my Macports, but it failed: 9 Answers ...
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Find the files existing in one directory but not in the other [closed]

... Explanation: diff -r dir1 dir2 shows which files are only in dir1 and those only in dir2 and also the changes of the files present in both directories if any. diff -r dir1 dir2 | grep dir1 shows which files are only in dir1 awk to print only filename. ...
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Node.JS constant for platform-specific new line?

...this is new in the 0.8.x but there is now a constant http://nodejs.org/api/os.html#os_os_eol var endOfLine = require('os').EOL; share | improve this answer | follow ...
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How to use/install gcc on Mac OS X 10.8 / Xcode 4.4

I have install Mountain Lion (Mac OS X 10.8) and now gcc doesn't seem to be available anymore. I've also installed Xcode 4.4 so there is no more /Developer directory. ...
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Emacs on Mac OS X Leopard key bindings

... @wic: Don't those characters have their own keys? – Kyle Cronin Oct 6 '09 at 16:33 1 ...
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How do I run IDEA IntelliJ on Mac OS X with JDK 7?

I use Mac OS X 10.8.2, and use JDK 7. Now I downloaded the latest version of IDEA IntelliJ, 11. But it doesn't seem to start without JDK 6. Is there any workaround? ...
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How to run a shell script in OS X by double-clicking?

I have a shell script that has user execution permission on OS X, but when I double click on it, it opens in a text editor. How can I get it to run by double-clicking it? ...