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Run Cron job every N minutes plus offset
...-59/20 * * * *
Explanation
An * in the minute field is the same as 0-59/1 where 0-59 is the range and 1 is the step. The command will run at the first minute in the range (0), then at all successive minutes that are distant from the first by step (1), until the last (59).
Which is why */20 * * *...
Exit a Script On Error
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138
Are you looking for exit?
This is the best bash guide around.
http://tldp.org/LDP/abs/html/
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How to replace all strings to numbers contained in each string in Notepad++?
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191
In Notepad++ to replace, hit Ctrl+H to open the Replace menu.
Then if you check the "Regular ...
initializing a boolean array in java
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edited Jan 2 '13 at 16:17
answered Mar 2 '10 at 16:42
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How do you create nested dict in Python?
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313
A nested dict is a dictionary within a dictionary. A very simple thing.
>>> d = {}
&g...
Using custom std::set comparator
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162
You are using a function where as you should use a functor (a class that overloads the () oper...
Error in : object of type 'closure' is not subsettable
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120
In general this error message means that you have tried to use indexing on a function. You ca...
How to get numbers after decimal point?
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An easy approach for you:
number_dec = str(number-int(number))[1:]
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Using CSS how to change only the 2nd column of a table
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answered Mar 29 '10 at 0:04
Nick Craver♦Nick Craver
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What is the difference between class and instance attributes?
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Beyond performance considerations, there is a significant semantic difference. In the class a...