github.com/troglobit / netcalc

Simplified clone of sipcalc with ipcalc looks

Commit log
032298f ⎇ master🏷 v2.1.7Bump version for v2.1.7 release Joachim Wiberg 2 years ago
8897eb4 Update and clarify man page slightly Joachim Wiberg 2 years ago
dcb2af2 Update maintainer surname and copyright years Joachim Wiberg 2 years ago
9631749 debian: update changelog for v2.1.7 release Joachim Wiberg 2 years ago
f7cdb93 🏷 v2.1.7-rc1⎇ devUpdate ChangeLog and bump for v2.1.7-rc1 Joachim Wiberg 2 years ago
9717cce .github: bump actions and refactor release workflow Joachim Wiberg 2 years ago
844b0b0 Fix overflow detection Joachim Wiberg 2 years ago
ca15395 Fix warnings on NetBSD Joachim Wiberg 2 years ago
88aab36 Refactor, use strlcat() when we can Joachim Wiberg 2 years ago
f0d8d40 Minor, coding style Joachim Wiberg 2 years ago
README.md
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README.mdBSD 3-clause license
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IP network calculator

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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.

Image netcalc example run

Build & Install

Debian/Ubuntu

curl -sS https://deb.troglobit.com/pubkey.gpg | sudo tee /etc/apt/trusted.gpg.d/troglobit.asc
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:

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:

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.