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Bash script - variable content as a command to run

I have a Perl script that gives me a defined list random numbers that correspond to the lines of a file. Next I want to extract those lines from the file using sed . ...
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Reasons for using the set.seed function

...: In the academic world, if one claims that his algorithm achieves, say 98.05% performance in one simulation, others need to be able to reproduce it. ?set.seed Going through the help file of this function, these are some interesting facts: (1) set.seed() returns NULL, invisible (2) "Init...
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Remove plot axis values

I was just wondering if there is a way to get rid of axis values, either the x-axis or y-axis respectively, in an r-plot graph. ...
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JOIN two SELECT statement results

...ing it for? – petrosmm Apr 18 at 21:05 1 ...
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Regular Expression to match only alphabetic characters

I was wondering If I could get a regular expression which will match a string that only has alphabetic characters, and that alone. ...
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TypeError: module.__init__() takes at most 2 arguments (3 given)

... Your error is happening because Object is a module, not a class. So your inheritance is screwy. Change your import statement to: from Object import ClassName and your class definition to: class Visitor(ClassName): or chan...
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case-insensitive list sorting, without lowercasing the result?

...the above x.sort(key=str.lower) command will fail and output the following error: TypeError: descriptor 'lower' requires a 'str' object but received a 'unicode' If you get this error, then either upgrade to Python 3 where they handle unicode sorting, or convert your unicode strings to ASCII strings...
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Random number from a range in a Bash Script

... diosney 9,9601414 gold badges6262 silver badges105105 bronze badges answered Oct 26 '13 at 2:07 JesinJesin 79077 silver badges...
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How to obtain the number of CPUs/cores in Linux from the command line?

I have this script, but I do not know how to get the last element in the printout: 27 Answers ...
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Decode Base64 data in Java

... Nightfirecat 10.5k66 gold badges3131 silver badges5050 bronze badges answered Jan 13 '10 at 3:42 Jeremy RossJeremy Ross 10.6k33 g...