First of all what is BOINC?
Boinc is an acronym for “Berkeley Open-Infrastructure for Network Computing”. A broad term, but what it boils down to is a program that launches when the computer is idle. When it starts it uses these lost CPU cycles to execute jobs. These jobs are usually big calculations that if one would try them on a single computer would take decades to complete. There are a wide variety of projects you can join, some well know are SETI (search for extra terrestrial life), the world community grid (various projects that try to combat different diseases) and numerous others.
How to Install it on Linux Mint
apt-get install boinc-manager /etc/init.d/boinc-client restart
Use the boinc manager (boincmgr) to add projects. Use this program to tweak CPU, memory usage and other settings.
If you want to enable external access, needed to use boinc view for example on an other PC.
vi /etc/default/boinc-client # Add BOINC_OPTS="--allow_remote_gui_rpc --gui_rpc_port 12345" vi /etc/boinc-client/gui_rpc_auth.cfg # Add your password in this file. # This will be used for authentication. /etc/init.d/boinc-client restart # Restart daemon