expandCIDR will use an nmap compliant scope list file and expand it, generating a file with the IP list.

Optionally it can also select an arbitrary number of random IPs from the expanded IP list, instead. Typically useful in large vulnerability assessments where testing a sample of a baselined subnet (such as SIP) is more efficient than testing the entire subnet.

usage: expandcidr [scope file] [output file] {# of rnd ips}

examples: 

expandcidr scope_subnets.txt scope.txt

expandcidr scope.txt sample.txt 500