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Getting the count of unique values in a column in bash
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153
To see a frequency count for column two (for example):
awk -F '\t' '{print $2}' * | sort | uniq...
How does C compute sin() and other math functions?
...ion or branching is rather clever. But there's no comment at all!
Older 32-bit versions of GCC/glibc used the fsin instruction, which is surprisingly inaccurate for some inputs. There's a fascinating blog post illustrating this with just 2 lines of code.
fdlibm's implementation of sin in pure C ...
How to obtain the number of CPUs/cores in Linux from the command line?
...ost cases.
– Frank Kusters
May 17 '13 at 10:52
9
grep -c '^processor' /proc/cpuinfo on zsh.
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How do you 'redo' changes after 'undo' with Emacs?
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293
Short version: by undoing the undo. If you undo, and then do a non-editing command such as C-f, ...
Converting XML to JSON using Python?
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edited Sep 7 '14 at 21:36
answered Oct 10 '08 at 14:34
D...
What are free monads?
...thias Braun
22k1616 gold badges104104 silver badges138138 bronze badges
answered Nov 13 '12 at 8:11
Philip JFPhilip JF
26.3k55 gol...
Javascript: Round up to the next multiple of 5
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283
This will do the work:
function round5(x)
{
return Math.ceil(x/5)*5;
}
It's just a variat...
How to find encoding of a file via script on Linux?
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436
Sounds like you're looking for enca. It can guess and even convert between encodings. Just look...
Iterate over a list of files with spaces
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32
This is extremely clean. And makes me feel nicer than changing IFS in conjunction with a for loop
– Derrick
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