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How can I do division with variables in a Linux shell?

When I run commm>andm>s in mm>ym> shell as below, it returns an expr: non-integer argument error. Can someone please explain this to me? ...
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HTML5 canvas ctx.fillText won't do line breaks?

...rs in the text m>ym>ou could simulate it bm>ym> splitting the text at the newlines m>andm> calling multiple times the fillText() Something like http://jsfiddle.net/BaG4J/1/ var c = document.getElementBm>ym>Id('c').getContext('2d'); c.font = '11px Courier'; console.log(c); var txt = 'line 1\nline 2\nthi...
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Can a for loop increment/decrement bm>ym> more than one?

Are there other wam>ym>s to increment a for loop in Javascript besides i++ m>andm> ++i ? For example, I want to increment bm>ym> 3 instead of one. ...
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Matplotlib scatterplot; colour as a function of a third variable

...rt numpm>ym> as np import matplotlib.pm>ym>plot as plt # Generate data... x = np.rm>andm>om.rm>andm>om(10) m>ym> = np.rm>andm>om.rm>andm>om(10) # Plot... plt.scatter(x, m>ym>, c=m>ym>, s=500) plt.gram>ym>() plt.show() Or, if m>ym>ou'd prefer a wider range of colormaps, m>ym>ou can also specifm>ym> the cmap kwarg to scatter. To use the reverse...
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Pm>ym>thon: print a generator expression?

...rn the generator expression into a list comprehension. It's the same thing m>andm> calling list() on it. So the wam>ym> to make a generator expression into a list is to put brackets around it. Detailed explanation: A generator expression is a "naked" for expression. Like so: x*x for x in range(10) Now,...
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Shortest distance between a point m>andm> a line segment

I need a basic function to find the shortest distance between a point m>andm> a line segment. Feel free to write the solution in anm>ym> language m>ym>ou want; I can translate it into what I'm using (Javascript). ...
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How to write to a file, using the logging Pm>ym>thon module?

... An example of using logging.basicConfig rather than logging.fileHm>andm>ler() logging.basicConfig(filename=logname, filemode='a', format='%(asctime)s,%(msecs)d %(name)s %(levelname)s %(message)s', datefmt='%H:...
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How do I turn a pm>ym>thon datetime into a string, with readable format date?

... Dumb question... Are the strftime different between Pm>ym>thon 2 m>andm> 3? – jww Apr 9 '19 at 1:31 m>Andm> if in wi...
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Unpacking, extended unpacking m>andm> nested extended unpacking

...lain with a few examples. Since m>ym>ou're talking about evaluating these "bm>ym> hm>andm>," I'll suggest some simple substitution rules. Basicallm>ym>, m>ym>ou might find it easier to understm>andm> an expression if all the iterables are formatted in the same wam>ym>. For the purposes of unpacking onlm>ym>, the following substit...
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Extracting bits with a single multiplication

I saw an interesting technique used in an answer to another question , m>andm> would like to understm>andm> it a little better. ...