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    <p>Perl or python are the obvious choices, it depends what suits you best really at the end of the day. Neither are that difficult but in general if you find that you prefer a flowing linguistic language that is really flexible perl would suit you better, where as if you find you prefer a more rigid language with a more mathematical mindset (especially in believing there is only one way to do something right) then you'd probably feel more at home in python. Other languages can do the job pretty well but those two are obvious choices due to portability and being strong languages for CLI scripting tasks, especially text manipulation, as well as being strong webdev languages leading to large numbers of useful modules available for web orientated tasks(giving the benefit of php mentioned, but without the negative aspects of php for clientside) . If large numbers of useful modules being available is a pro for you then perl has massive amounts more for this kind of task than any other language (on CPAN) it might be worth checking out if there is code you can reuse out there before taking the dive into which language to use. In certain areas one is faster than the other (python generally excels at complex maths, perl can generally process text quicker, depends how you do it though).</p> <p>Other language choices are out there, a compiled language is less portable and so generally more of a pain setting it up on a server, however executes faster. Scripting languages are generally designed to manipulated text and files with greater ease than compiled languages, though not always true. I feel more comfortable with perl, so I'd use it, but me saying that is not the basis you should make a decision on, find out which has more resources you can use, and which you like the feel of better (read some code see which style makes more sense to you) and then decide.</p> <p>Oh and orielly have a book on programming collective intelligence aimed at beginners to the subject, I've never read it but its supposed to be pretty good, flick through it in a shop and give it consideration as its largely about web-crawler algorithms... It uses python for examples. </p>
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    1. POWhat is the ideal program language for a web-crawler?
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