I’m not saying that these are anything impressive. I just don’t keep a record of the regex that I do and sometimes I don’t want to think.
If you’re not bothered to think either, then I hope that this helps you.
Disks in Linux
\/dev\/[a-z]+[0-9]+(|n[0-9]+)(|p[0-9]+)
IP - sucky
This technically pulls the IP however it’s not the best because the periods (.) are optional. It is small though.
"([0-9]{1,3}(|\.)){4}"
IP - Accurateish
This will pull IP’s with high confidence.
([0-9]{1,3}\.){3}[0-9]{1,3}