Help with 'sed' command please

Hi there,

Can someone please tell me what 'sed' command I need to extract "10.2.0.4SE" from the following file please ..

GVPCOGPR:/opt/app/oracle/product/10.2.0.4SE:N
GVPGCOGPR:/opt/app/oracle/product/10.2.0.4SE:N
GVPV6CPP:/opt/app/oracle/product/10.2.0.4SE:Y

I've tried a number of ways but it's driving me insane !

Many thanks in advance.

This should do

Code:

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sed -rn 's#^GVP.*/([[:digit:]]+\.[[:digit:]]+\.[[:digit:]]+\.[[:alnum:]]+):.*$#\1#p'  YOUR_TEXTFILE

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Dynamite

Cheers fella