In a bash script I have an IP address like 192.168.1.15 and a netmask like 255.255.0.0. I now want to calculate the start address of this network, that means using the &-operator on both addres...

Example: I have this netmask: 255.255.255.0 Is there, in bash, a command or a simple script to convert my netmask in notation /24?

How can I convert a CIDR prefix to a dotted-quad netmask in Python? For example, if the prefix is 12 I need to return 255.240.0.0.

When a IP-Range is written as aaa.bbb.ccc.ddd/netmask (CIDR Notation) I need to calculate the first and the last included ip address in this range with C#. Example: Input: 192.168.0.1/25 Result:...

I have a small piece of code that converts a 32-bit unsigned integer (ie: uint32_t) into a set of four 8-bit fields, treats it like an IP address, and then reports to the client if it falls within ...

Is there a way to calculate a CIDR given a Sub net mask using any Java lib/function/trick?? I have been looking for a while and all I can find is from CIDR -> Netmask and I need it the other way...

I've run into a known bug with Java 6 on Windows. My understanding is that the normal way to get the netmask is to look up the network prefix length and do some bit shifts. The problem is that on W...