Grep IP Addresses

A grep command to get all IP addresses contained in a text file

A grep command to get all IP addresses contained in a text file:

$ grep -Eo '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' IPs-To-Grep.txt > Grepped-ips.txt

Grep IP Address with their CIDRs from a text file:

egrep -o '[0-9]+[.][0-9]+[.][0-9]+[.][0-9]+/[0-9]+' scope.txt > final-scope.txt