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using Regular exprestion to validate IP Address in Powershell?

Tags:

regex

powershell

I have this code in PowerShell and it does not work! any help?

I just need it to make sure that the string is a working IP not 999.999.999.999 or a normal string

just an IP [0....255].[0....255].[0....255].[0....255]

if ($newIP -match "(\b(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\b)") { $x = $True}

cheers

like image 971
Data-Base Avatar asked May 05 '11 16:05

Data-Base

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Type cast to [System.PowerShell Type accelerator [IPAddress] which is also an alias of System. Net. IPAddress class can validate IP Addresses if it is typecast-ed against it, and will throw an error when IP Address is out of range or is incorrect in format.

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2 Answers

Here is a more compact one:

\b(([01]?\d?\d|2[0-4]\d|25[0-5])\.){3}([01]?\d?\d|2[0-4]\d|25[0-5])\b

like image 32
mousio Avatar answered Sep 28 '22 15:09

mousio

How about:

[bool]($newIP -as [ipaddress])
like image 144
mjolinor Avatar answered Sep 28 '22 15:09

mjolinor
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