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#1
06-04-2008
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how to test the regular expressions
Hi,
lam taking the IP address as input from the user. I want to test whether the user has entered the IP address in the right format or not. Can any one suggest me the syntax to test the user given IP address ASAP. Its a bit urgent. Regards,  
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#2
06-05-2008
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this could help you:
How to validate an IP address
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#3
06-05-2008
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Code:
o1='1[0-9]{0,2}|2([6-9]|[0-4][0-9]?|5[0-4]?)?|[3-9][0-9]?'
o0='0|255|'"$o1"
if echo "$ip" | egrep -v "^($o1)(\.($o0)){2}\.($o1)$" >/dev/null; then
echo invalid ip
fi
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