mail -s "RKhunter Scan Details" firstname.lastname@example.org
Replace the e-mail above with your e-mail!! It is best to send the e-mail to an e-mail off-site so that if the box IS compromised the hacker can’t erase the scan report unless he hacks another server too.
chmod +x /etc/cron.daily/rkhunter.sh
Next, update rkhunter so that all the components are the latest versions
Then you can run a scan against your system
rkhunter -c --sk --display-logfile
Once the scan completes you can go through the list produced and fix the various things!