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$regex = '\w159\.230\.([01]?\d\d?|2[0-4]\d|25[0-4])\.([01]?\d\d?|2[0-4 +]\d|25[0-4])'; while (<INFILE>) { if (m/$regex/os) { print PIXOUT $_;
network-object 159.230.xxx.xxx 255.255.224.0 network-object 159.230.xxx.xxx 255.255.252.0 ... network-object host 159.230.xxx.xxx network-object host 159.230.xxx.xxx network-object host 159.230.xxx.xxx