preproccessing using regex

[mellis]

I need to do some preprocessing on data collected. example we want to collect ip address, ip subnet and default gateway. I found it easy to use the system.run {wmic nicconfig get ipaddress} that returns a string that contains the ipaddress. I would now like to strip off every thing except the address. I found o could do some of the with the left and right trim, but there seems to be some white spaces that prevent me from getting the ip address only. I see I can use regex but do not understand the instructions or how to use this.

Is there some good instructions on how this works?

[Hamardaban]

In you case use this regex ' \D*\s*(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})\D*\s* ' (not optimal and curve) to catch IP (\1 group). If the computer has more than one address - you will receive a list of them....