Install cernlib-montecarlo by entering the following commands in the terminal:
sudo apt update sudo apt install cernlib-montecarlo
CERNLIB Monte Carlo libraries
CERNLIB is a suite of data analysis tools and libraries created for use in physics experiments, but also with applications to other fields such as the biological sciences. . This metapackage provides various Monte Carlo libraries included in CERNLIB (both shared and static). Likely only physicists will be interested in these packages. Note that the GEANT 3.21 framework is not included, but it may be obtained by also installing the geant321 Debian package. . Be aware that the libraries of Ariadne, Fritiof, Jetset, Lepto, and Pythia are not available within Debian due to licensing issues; see the README.Debian file in the montecarlo-base package for information on obtaining them.