ipcalc

a simple IPv4 calculator

This script calculates several values with the input of IP-address and subnetmask or IP-address and CIDR. see example below.

syntax:

#################################################
#                                               #
#                 IP Calculator                 #
#                                               #
#                       by                      #
#                                               #
#                Owen Trafalgar                 #
#                                               #
#################################################
#                                               #
# syntax:                                       #
#                                               #
# ./ipcalc.sh [ip-address]/[cidr]               #
# ./ipcalc.sh 192.168.0.1/24                    #
#                                               #
# or                                            #
#                                               #
# ./ipcalc.sh [ip-address] [netmask]            #
# ./ipcalc.sh 192.168.0.1 255.255.255.0         #
#                                               #
#################################################

example

./ipcalc.sh 192.168.0.123/24

#################################################
#                                               #
#                 IP Calculator                 #
#                                               #
#                       by                      #
#                                               #
#                Owen Trafalgar                 #
#                                               #
#################################################
#                                               #
# IP-Address:                   192.168.0.1     #
# IP-Class:                     C               #
# Use Case:                     Private         #
# Netmask:                      255.255.255.0   #
# CIDR Suffix:                  24              #
# Wildcard:                     0.0.0.255       #
# Network Address:              192.168.0.0     #
# Broadcast:                    192.168.0.255   #
# Number of IP-Addresses:       256             #
# Number of possible Hosts:     254             #
# Host IP Start:                192.168.0.1     #
# Host IP End:                  192.168.0.254   #
#                                               #
#################################################