ipcalc command on Linux.
options: 
 -b broadcast address
 -n network address
 -m netmask
 -p prefix
Either prefix or netmask can be used:

ipcalc -nbmp 192.168.0.197/24
NETMASK=255.255.255.0
PREFIX=24
BROADCAST=192.168.0.255
NETWORK=192.168.0.0

ipcalc -nbmp 192.168.0.197 255.255.255.0
NETMASK=255.255.255.0
PREFIX=24
BROADCAST=192.168.0.255
NETWORK=192.168.0.0


Book's examples:

ipcalc -nbmp 8.1.4.5 255.255.0.0
NETMASK=255.255.0.0
PREFIX=16
BROADCAST=8.1.255.255
NETWORK=8.1.0.0

ipcalc -nbmp 130.4.102.1 255.255.255.0
NETMASK=255.255.255.0
PREFIX=24
BROADCAST=130.4.102.255
NETWORK=130.4.102.0

ipcalc -nbmp 130.4.102.1 255.255.252.0
NETMASK=255.255.252.0
PREFIX=22
BROADCAST=130.4.103.255
NETWORK=130.4.100.0

ipcalc -nbmp 199.1.1.100 255.255.255.224
NETMASK=255.255.255.224
PREFIX=27
BROADCAST=199.1.1.127
NETWORK=199.1.1.96