tar -czvf /backups/server_generic_$(date +%F).tar.gz /opt/server_generic_live
tar -czvf /backups/server_frontend_$(date +%F).tar.gz /opt/server_frontend_live
Add to /etc/cron.d/project_backups:
0 2 * * * root tar -czf /backups/server_generic_$(date +\%F).tar.gz /opt/server_generic_live
0 3 * * * root tar -czf /backups/server_frontend_$(date +\%F).tar.gz /opt/server_frontend_live
This creates nightly backups at 2 AM and 3 AM.