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Run cron job only if it isn't already running

... 16 Answers 16 Active ...
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Styling HTML email for Gmail

... The answers here are outdated, as of today Sep 30 2016. Gmail is currently rolling out support for the style tag in the head, as well as media queries. If Gmail is your only concern, you're safe to use classes like a modern developer! For reference, you can check the officia...
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An efficient way to transpose a file in Bash

... | edited Apr 10 '16 at 15:39 Ed Morton 144k1414 gold badges5858 silver badges133133 bronze badges ...
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Hide hidden(dot) files in github atom editor

... hidden paths. – aleclarson Jul 15 '16 at 21:04 Thank you @aleclarson. Hitting "i" with tree-view focused is the quick...
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How do I do an initial push to a remote repository with Git?

...erences. – Rick Smith Aug 22 '13 at 16:33  |  show 2 more comments ...
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How to check what version of jQuery is loaded?

... 916 if (typeof jQuery != 'undefined') { // jQuery is loaded => print the version alert...
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XSD: What is the difference between xs:integer and xs:int?

...r unbounded value. See for details https://web.archive.org/web/20151117073716/http://www.w3schools.com/schema/schema_dtypes_numeric.asp For example, XJC (Java) generates Integer for xs:int and BigInteger for xs:integer. The bottom line: use xs:int if you want to work cross platforms and be sure th...
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How to empty/destroy a session in rails?

...mended by Gdeglin? – Peter Berg Jan 16 '14 at 17:00 3 This can be used when you want to retain ot...
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How can I build multiple submit buttons django form?

... John Mee 41.7k2929 gold badges123123 silver badges167167 bronze badges answered May 14 '09 at 23:03 Ayman HouriehAyman Hourieh 1...
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How to disable the application pool idle time-out in IIS7?

...there's no surprises. – Kev Nov 25 '16 at 10:51 2 @Zero3 - yep, changing many of the App Pool set...