subnet_calculator.bash - A bash script for subnetting IP addresses

I've just created subnet_calculator.bash, a small Bash script for subnetting IP addresses.

It's not a very fancy calculator, like the ones you can find online, but it works.

You only have to enter the IP address you want to subnet and the classless subnet mask in CIDR notation, and the script tells you how many networks and hosts can be obtained from that IP address.

Hope you guys like it.

Source code