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Select random lines from a file
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edited Jun 16 '16 at 20:48
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Bash tool to get nth line from a file
...re NUM is the number of the line you want to print; so, for example, sed '10q;d' file to print the 10th line of file.
Explanation:
NUMq will quit immediately when the line number is NUM.
d will delete the line instead of printing it; this is inhibited on the last line because the q causes the res...
How to combine multiple conditions to subset a data-frame using “OR”?
... it is to be handled as I intended, since ...
> NA & 1
[1] NA
> 0 & NA
[1] FALSE
Order of arguments may matter when using '&".
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Citing the author of a blockquote using Markdown syntax
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answered Jan 4 '10 at 20:51
ceejayozceejayoz
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Rebuild IntelliJ project indexes
IntelliJ IDEA 10.5.1 is reporting zero usages for all method, classes etc.
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How to “EXPIRE” the “HSET” child key in redis?
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edited Oct 3 '18 at 9:10
Erik Rothoff
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How to open a web server port on EC2 instance
I'm running a CherryPy web server at 0.0.0.0:8787 on an EC2 instance.
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What do linkers do?
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answered Jul 23 '10 at 23:04
IcemanindIcemanind
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IIS: Idle Timeout vs Recycle
...idle timeout doesn't matter because nobody is logged in anyway and figure 20 minutes an no action they are not still "shopping"
The positive would be get rid of the idle time out as your website will respond faster on its "first" response if its not a highly active site where a user would have to w...
rails 3 validation on uniqueness on multiple attributes
I use Rails 3.0.0.beta4
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