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Cron job every three days

... that? If you want it to run on specific days of the month, like the 1st, 4th, 7th, etc... then you can just have a conditional in your script that checks for the current day of the month. if (((date('j') - 1) % 3)) exit(); or, as @mario points out, you can use date('k') to get the day of the...
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importing pyspark in python shell

...e the same issue. (See http://geekple.com/blogs/feeds/Xgzu7/posts/351703064084736) 19 Answers ...
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Getting indices of True values in a boolean list

... 114 Use enumerate, list.index returns the index of first match found. >>> t = [False, Fals...
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How to save a plot as image on the disk?

... edited May 23 '17 at 11:54 Community♦ 111 silver badge answered Aug 22 '11 at 7:15 ...
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Change Active Menu Item on Page Scroll?

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How to remove an item for a OR'd enum?

... David Sherret 74.1k2222 gold badges149149 silver badges154154 bronze badges answered Jan 24 '11 at 2:54 SLaksSLaks ...
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Best way to simulate “group by” from bash?

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What's the difference between Unicode and UTF-8? [duplicate]

... hannson 4,18666 gold badges3434 silver badges4444 bronze badges answered Oct 17 '10 at 2:57 bobincebobince ...
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Flatten an irregular list of lists

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Will HTML5 allow web apps to make peer-to-peer HTTP connections?

...thjrharshath 23k3232 gold badges9292 silver badges124124 bronze badges 45 ...