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Meaning of “[: too many arguments” error from if [] (square brackets)

...t find any one simple straightforward resource spelling out the meaning of and fix for the following BASH shell error, so I'm posting what I found after researching it. ...
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Adding two numbers concatenates them instead of calculating the sum

... out of curiousity (myself not a JavaScript programmer) (and I think this would improve the answer), what does the +-prefix do with strings? – Sebastian Mach Jan 24 '13 at 8:10 ...
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Fork and synchronize Google Code Subversion repository into GitHub

How can I fork and keep in sync with an Google Code Subversion repository that I don't have write access to, into a GitHub repository? ...
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How to sum a variable by group

...umns. First column contains categories such as "First", "Second", "Third", and the second column has numbers that represent the number of times I saw the specific groups from "Category". ...
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Sorting dictionary keys in python [duplicate]

... have an elegant solution which gives (key,value) pairs sorted by key. ...and doesn't require providing the dict variable name more than once (I tend to have very long descriptive variable names). d.iteritems() still seems the most useful. – travc Jan 30 '13 ...
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Using ls to list directories and their total sizes

... it possible to use ls in Unix to list the total size of a sub-directory and all its contents as opposed to the usual 4K that (I assume) is just the directory file itself? ...
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How to return dictionary keys as a list in Python?

...keys()). This will convert the dict_keys object to a list. On the other hand, you should ask yourself whether or not it matters. The Pythonic way to code is to assume duck typing (if it looks like a duck and it quacks like a duck, it's a duck). The dict_keys object will act like a list for most pu...
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Converting bytes to megabytes

... it is not correct actually because mega means 1 000 000. There is a new standard name for 220 bytes, it is mebibyte (http://en.wikipedia.org/wiki/Mebibyte) and it gathers popularity. share | improv...
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Defining static const integer members in class definition

My understanding is that C++ allows static const members to be defined inside a class so long as it's an integer type. 7 An...
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What is the dual table in Oracle?

I've heard people referring to this table and was not sure what it was about. 14 Answers ...