2014-08-01
Version 1.2 released.
2013-11-07
Version 1.1 released.
2004-12-02
Version 1.0 released.
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Ipinfo is a simple tool for calculation of IP networks -
broadcast address, wildacrd address or count of usable IP addresses
in a network, all of it based just on the knowledge of an IP address
and network mask (or prefix length). The program is written in
C programming language primarily on the Linux platform, however
it should be possible to run it on other platforms too.
As a product part of the package there is a program ipmatch,
which can simple tell if given IP address belongs to a given subnet
(or if it is a network or a broadcast address).
Version 1.0 can be distributed and modified freely under the terms of
GPL license, however
version 1.1 and higher are distributed under the terms of this
license:
Licence Beerware, revize 42:
As long as you retain this notice you can do whatever you want
with this stuff. If we meet some day, and you think this stuff
is worth it, you can buy me a beer in return.
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Installation is simple, just unpack the downloaded file, enter the newly
created directory, compile and install the program. If compilation
or installation fails, check definition values in Makefile:
$ tar xzf ipinfo-x.y.tar.gz
$ cd ipinfo-x.y
$ make
# make install
You need to have these programs installed before you compile ipinfo:
The program will be installed into directory /usr/local/bin
(you have to have root superuser permission for that probably).
If you want to change this directory, change definition of BINDIR
in Makefile. A manual page containing execution instruction
will be installed too (see MANDIR in Makefile).
ipinfo
The program can be run with a few parameters:
ipinfo [parameters] ip [mask]
List of parameters:
| Parameter |
Function |
| -a, --all |
Display everything (default behavior) |
| -i, --ip |
Display given IP address |
| -d, --decimal |
Display decimal value of given IP address |
| -c, --class |
Display class information |
| -m, --netmask |
Display network mask |
| -p, --prefix |
Display network prefix length |
| -n, --network |
Display network address |
| -w, --wildcard |
Display wildcard address |
| -b, --broadcast |
Display boradcast address |
| -t, --ipcount |
Display count af all IP addresses in network |
| -H, --hostcount |
Display count of host IP addresses in network |
| -I, --hostmin |
Display first usable IP address of a host in network |
| -A, --hostmax |
Display last usable IP address of a host |
| -l, --legend |
Force display legend (usable only if output has 1 line) |
| -h, --help, --usage |
Display help |
Ip address can be specified in one of these formats:
(a.b.c.d is IP address, e.f.g.h is network mask,
pp is prefix length)
- a.b.c.d/pp
- a.b.c.d pp
- a.b.c.d/e.f.g.h
- a.b.c.d e.f.g.h
- a.b.c.d
ipmatch
The program can be run with a few parameters:
ipmatch [-r|-n|-h|-b] ip network/netmask
List of parameters:
| Parameter |
Function |
| -r, --range |
Check if IP address is in given range (default) |
| -n, --network |
Check if IP address is network address |
| -h, --host |
Check if IP address is a host address |
| -b, --broadcast |
Check if IP address is broadcast address |
| -t, --text |
Print text output (IN/OUT) - default: no output |
| --help, --usage |
Display help |
Network and netmask can be specified in one of these formats:
- a.b.c.d/prefix (prefix is set instead of netmask)
- a.b.c.d prefix
- a.b.c.d/e.f.g.h (full netmask)
- a.b.c.d e.f.g.h
- a.b.c.d (netmask will be determined automatically)
Return values:
0 - IP was checked as being in range
1 - syntax or usage error
2 - IP was checked as being out of range
There are no known bugs at this moment. If you have discover any
unexpected behavior of this software, please let me know at
mccohy@kyberdigi.cz.
1. 8. 2014
Probably becouse of a typo and missing checks the program was throwing
an error in case of useing netmask with the end value set to 128 or 224.
This was repaired in version 1.2, if you have any lower version, perform
an upgrade.
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