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Re: [vox-tech] bash scripting question
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Re: [vox-tech] bash scripting question

Cylar Z wrote:
Hey programming gurus...
I want to write a script which takes a block of text
and extracts any numbers which match a 123.456.789.012
pattern. I am not looking for any numbers in
particular (so I don't think the grep command will be
of much help) but rather, any set of numbers that
looks like an IP address.
Why /not/ grep?

egrep -o '\<[0-9]{1,3}(\.[0-9]{1,3}){3}\>'

does a decent job, though it will match invalid components like your 456 or 789 above. A more thorough regex could be constructed to match exactly 0-255, but it's somewhat painful.

Micah J. Cowan
Programmer, musician, typesetting enthusiast, gamer...
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