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Bash command to sum a column of numbers [duplicate]
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paste -sd+ infile | bc
Using stdin:
<cmd> | paste -sd+ | bc
Edit:
With some paste implementations you need to be more explicit when reading from stdin:
<cmd> | paste -sd+ - | bc
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Can't install PIL after Mac OS X 10.9
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edited Dec 9 '13 at 19:30
answered Oct 23 '13 at 15:05
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How to make an introduction page with Doxygen
I made documentation for my SDK, using Doxygen. It contains the list of files, namespaces, classes, types etc. - everything that I placed as Doxygen comments in the code. Now I want to write some general information about SDK (kind of introduction), which is not related directly to any code element....
Django class-based view: How do I pass additional parameters to the as_view method?
...for the base class function where this is set .
– binithb
Nov 23 '15 at 16:57
In github.com/django/django/blob/master/...
ssh: connect to host github.com port 22: Connection timed out
I am under a proxy and I am pushing in to git successfully for quite a while.
Now I am not able to push into git all of a sudden.
I have set the RSA key and the proxy and double checked them, with no avail and git is throwing me the error shown in the title of the page.
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ArrayList vs List in C#
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Yes, pretty much. List<T> is a generic class. It supports storing values of a specific type without casting to or from object (which would have incurred boxing/unboxing overhead when T is a value type in the ArrayList case). ArrayList simply stores object references. As ...
What is the best way to check for Internet connectivity using .NET?
What is the fastest and most efficient way to check for Internet connectivity in .NET?
27 Answers
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Grab a segment of an array in Java without creating a new array on heap
...is worthy of deletion. The answer by @unique72 is correct. Imma let this edit sit for a bit and then I shall delete this answer.)
I don't know of a way to do this directly with arrays without additional heap allocation, but the other answers using a sub-list wrapper have additional allocation fo...
How can I check file size in Python?
I am writing a Python script in Windows. I want to do something based on the file size. For example, if the size is greater than 0, I will send an email to somebody, otherwise continue to other things.
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iOS - forward all touches through a view
...llviews, etc. How can I forward all the touches through this overlay view? It is a subcalss of UIView.
13 Answers
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