I always use Perl when I need to do some calculation. 

$ perl -le 'print <arithmetic expression here>'

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The debugger is handy for iterative calculations: 

$ perl -de0

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Update - tip: Be careful with constructs like: 

print (5 + 4) * 3;

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This is equivalent to (print 5 + 4) * 3, probably not what you want.

In reply to Re: Favourite One-liners? by calin
in thread Favourite One-liners? by ghenry

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