11-08-2009
Quote:
Originally Posted by
cfajohnson
There's no need to use an external program when it can be done many times faster with bash (or any POSIX shell).
the idea of not using external program to do stuff that the shell can't do any better is a bit illogical. Can you show an example where using the shell to do what the OP wants to do as compared to an external program such as awk (or others) puts using the shell at a speed advantage? If possible, show how much faster it can get.
On the other hand, what the OP is doing might be part of a bigger project and not just comparing 2 numbers. In that kind of scenario, its not even wise to use just the shell. In fact, a better programming language should be used. One other thing you neglected in terms of "how much faster" is the development time of creating the script and coping with "compatibility issues". Imagine how much time one will waste to come up with the solution that you proposed, especially comparing the decimal part. It takes so much less time when a simple syntax of a > b is enough to do the job (and simpler to understand too)
Just $0.02
Last edited by ghostdog74; 11-08-2009 at 10:19 PM..
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