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Run cron job only if it isn't already running

...ning... Restarted." exit 0 fi It runs every two minutes and is quite effective. I have it email me with special information if for some reason the process is not running. share | improv...
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How to sort an array of associative arrays by value of a given key in PHP?

...s case. In the OP's example, the array to be sorted has sequential numeric indexes rather than string indexes, so usort is more appropriate. Using uasort on a sequentially-indexed array will result in a sorted array which is not ordered by its numeric indexes, such that the first element seen in a f...
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Submitting a form by pressing enter without a submit button

...ute, or at least I would: <script type="text/javascript"> // Using jQuery. $(function() { $('form').each(function() { $(this).find('input').keypress(function(e) { // Enter pressed? if(e.which == 10 || e.which == 13) { this.form.submit(); ...
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How do I find which rpm package supplies a file I'm looking for?

... This is an old question, but the current answers are incorrect :) Use yum whatprovides, with the absolute path to the file you want (which may be wildcarded). For example: yum whatprovides '*bin/grep' Returns grep-2.5.1-55.el5.x86_64 :...
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How do I profile memory usage in Python?

...h.heap() Partition of a set of 48477 objects. Total size = 3265516 bytes. Index Count % Size % Cumulative % Kind (class / dict of class) 0 25773 53 1612820 49 1612820 49 str 1 11699 24 483960 15 2096780 64 tuple 2 174 0 241584 7 2338364 72 dict of...
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How do I recursively delete a directory and its entire contents (files + sub dirs) in PHP?

... check out the solution someone gave me for the same question: glob seems to work nicer: stackoverflow.com/questions/11267086/… – NoodleOfDeath Aug 10 '12 at 17:09 ...
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Initial size for the ArrayList

... and is always greater or equal to the size of the list. When calling set(index, element) on the list, the index relates to the actual number of the list elements (=size) (which is zero in your code, therefore the AIOOBE is thrown), not to the array length (=capacity) (which is an implementation de...
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How do I detect if I am in release or debug mode?

... won't work when using a library (always returns true) : stackoverflow.com/q/20176284/878126 . Wonder what's the best alternative – android developer Jun 21 '16 at 9:33 ...
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How to remove all .svn directories from my application directories

... You may need to put {} into single quote if there may be space or such characters in directories: find . -name .svn -exec rm -rf '{}' \; – mtoloo Sep 17 '12 at 11:25 ...
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DbEntityValidationException - How can I easily tell what caused the error?

...ing or array type with a maximum length of '12'; The LastName field is required. You can drop the overridden SaveChanges in any class that inherits from DbContext: public partial class SomethingSomethingEntities { public override int SaveChanges() { try { ret...