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Regular expression to match a line that doesn't contain a word

I know it's possible to match a word and then reverse the matches using other tools (e.g. grep -v ). However, is it possible to match lines that do not contain a specific word, e.g. hede , using a regular expression? ...
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Does PHP have threading?

... found this PECL package called threads , but there is not a release yet. And nothing is coming up on the PHP website. 13 ...
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django : using select_related and get_object_or_404 together

Is there any way of using get_object_or_404 and select_related together or any other way to achieve the result of using these two together(except from putting it in try/except)?? ...
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“NODE_ENV” is not recognized as an internal or external command, operable command or batch file

...s would be SET NODE_ENV=development node foo.js running in the same command shell. You mentioned set NODE_ENV did not work, but wasn't clear how/when you executed it. share | improve this answer...
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How to echo shell commands as they are executed

In a shell script, how do I echo all shell commands called and expand any variable names? 13 Answers ...
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OOP vs Functional Programming vs Procedural [closed]

What are the differences between these programming paradigms, and are they better suited to particular problems or do any use-cases favour one over the others? ...
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Significant new inventions in computing since 1980

...World Wide Web ("distributed hypertext via simple mechanisms") as proposed and implemented by Tim Berners-Lee started in 1989/90. While the idea of hypertext had existed before (Nelson’s Xanadu had tried to implement a distributed scheme), the WWW was a new approach for implementing a distribute...
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Is MonoTouch now banned on the iPhone? [closed]

...or compatibility layer or tool are prohibited Kind of a bummer, MonoTouch and the Flash CS5 -> iPhone converter are very cool. share | improve this answer | follow ...
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What is the best way to ensure only one instance of a Bash script is running? [duplicate]

... a lockfile approach. If you acquire the lock, proceed else show a message and exit. As an example: [Terminal #1] $ lockfile -r 0 /tmp/the.lock [Terminal #1] $ [Terminal #2] $ lockfile -r 0 /tmp/the.lock [Terminal #2] lockfile: Sorry, giving up on "/tmp/the.lock" [Terminal #1] $ rm -f /tmp/the....
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How should I ethically approach user password storage for later plaintext retrieval?

As I continue to build more and more websites and web applications I am often asked to store user's passwords in a way that they can be retrieved if/when the user has an issue (either to email a forgotten password link, walk them through over the phone, etc.) When I can I fight bitterly against thi...