To install Omnet++ on debian/ubuntu
$ sudo apt update && sudo apt install -y build-essential gcc g++ bison flex perl \
python python3 qt5-default libqt5opengl5-dev tcl-dev tk-dev \
libxml2-dev zlib1g-dev default-jre doxygen graphviz wget tar qtbase5-dev qt5-qmake libopenscenegraph-dev &&
sudo apt install -y libosgearth-dev &&
wget -c https://github.com/omnetpp/omnetpp/releases/download/omnetpp-5.6.2/omnetpp-5.6.2-src-linux.tgz &&
tar xzf omnetpp-5.6.2-src-linux.tgz &&
cd omnetpp-5.6.2 &&