simple ip calc with python
$python ipcalc.py
Enter ip address (ex. 127.0.0.1/24): 192.168.0.1/24
Network: 192.168.0.0/24 11000000.10101000.00000000.00000000
Netmask: 255.255.255.0 11111111.11111111.11111111.00000000 (class C)
Broadcast: 192.168.0.255 11000000.10101000.00000000.11111111
FirstHost: 192.168.0.2 11000000.10101000.00000000.00000010
LastHost: 192.168.0.254 11000000.10101000.00000000.11111110
Hosts: 254