IP network calculator

netcalc is a slimmed down clone of sipcalc, using the output format of ipcalc. It is written in C and only depends on a POSIX compliant C library. Both IPv4 and IPv6 are supported.

Build & Install

Debian/Ubuntu

curl -sS https://deb.troglobit.com/pubkey.gpg | sudo apt-key add -
echo "deb [arch=amd64] https://deb.troglobit.com/debian stable main" | sudo tee /etc/apt/sources.list.d/troglobit.list
sudo apt-get update && sudo apt-get install netcalc

Docker

Automatically built images available here:

• https://hub.docker.com/r/troglobit/netcalc

A Dockerfile is provided to simplify building and running netcalc.

docker build -t netcalc:latest .
docker run --rm netcalc:latest netcalc 172.16.10.10/16

Building from Source

First download the latest official release from GitHub:

• https://github.com/troglobit/netcalc/releases

Always use the versioned tarballs, they contain all required files to be able to build.

Configure & Build

The GNU Configure & Build system use /usr/local as the default install prefix. Here we override that to use /usr/, the netcalc binary will then be installed in /usr/bin:

$ ./configure --prefix=/usr
$ make -j5
$ sudo make install-strip

Building from GIT

If you want to contribute, or simply just try out the latest but unreleased features, then you need to know a few things about the [GNU build system][buildsystem]:

• configure.ac and a per-directory Makefile.am are key files
• configure and Makefile.in are generated from autogen.sh, they are not stored in GIT but automatically generated for the release tarballs
• Makefile is generated by configure script

To build from GIT; clone the repository and run the autogen.sh script. This requires the GNU tools automake, autoconf and libtool to be installed on your system. Released tarballs do not require these tools.

$ sudo apt install git automake autoconf

Then you can clone the repository and create the configure script, which is not part of the GIT repo:

git clone https://github.com/troglobit/netcalc.git
cd netcalc/
./autogen.sh
./configure && make

GIT sources are a moving target and are not recommended for production systems, unless you know what you are doing!

Origin & References

The original sipcalc project was created by Simon Ekstrand in 2001. It is no longer actively maintained, but has a lot of features and is available on major Linux distributions and works on *BSD and Solaris.

Use GitHub to file bug reports, questions, feature requests or patches — preferably as pull requests.