Extract IP addresses with grep

Language

Description

Snippet

# IPv4
grep -o '[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}'

# IPv6
grep -o -P "([A-Fa-f0-9]{1,4}::?){1,7}[A-Fa-f0-9]{1,4}"