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my $entry = 'permit ip host 10.11.1.1 192.168.100.0 0.0.0.255'; while ($entry =~ /(?:host){0}\s+(\d+\.\d+\.\d+\.\d+)\s+(\d+\.\d+\.\d+\ +.\d+)/g){ # do something with $1 and $2 }
10.11.1.0 0.0.0.255 192.168.100.0 0.0.0.255