Please read the instructions to install Oasys at this wiki: https://github.com/srio/oasys-installation-scripts/wiki
Some scripts and docs that may help in installing Oasys:
prepare_installation.sh : installs some packages requing "sudo" for linux (debian+ubuntu)
install_oasys_using_miniconda.sh : Installs Oasys in $HOME/Oasys_Application with its own Python & packages (linux)
install_oasys_using_virtual_environment.sh : Installs Oasys in a Unix virtual environment
start_oasys.sh : starts Oasys using the virtual environment installation
Oasys info at: https://www.elettra.trieste.it/oasys.html