Home: http://icalc.rubyforge.org/
Download: http://rubyforge.org/projects/icalc/
ABSTRACT
The ‘icalc’ is versatile tool for network/system administators as well
as general users (implemented in a single file pure Ruby code). Give it
one of the <ip_address> <netmask> | <ip_address/prifix> | <ip_range>,
e.g. <start_ipaddr-end_ipaddr> pairs, it compute rest of the things like
network, broadcast, prefix, netmask, class and, or subnet charts divided
by a valid divider.
USAGE
$ icalc <address/prefix> [divisor]
$ icalc <address-range> [divisor]
$ icalc <address netmask> [divisor]
ChangeLog:
* icalc.rb: wrapped some methods in module ICALC
* mdoc: added rdoc's for above module
Cheers!
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