Cron <root at backup1> /usr/local/bin/rsnapshot -c /usr/local/etc/rsnapshot_desktops.conf daily

[root]

cp: /storage/backups/desktops/daily.0/lyra/home/sheath/.config/libvirt/qemu/lib/domain-debian8-2/monitor.sock is a socket (not copied).
cp: /storage/backups/desktops/daily.0/luna/home/vipuls/Desktop/luna-fusion/dougal/notebooks/nb is a socket (not copied).