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while (<DATA>) { print "$_\n" for /(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d{1,4})/gi; ... 127.0.0.1:22 more stuffs 10.2.2.8:8080 nothing here 3.4.5.6:1 100.200.100.200:3000
use strict; use warnings; while (<>) { print "$_\n" for /(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}:\d{1,4})/gi; }