Rkhunter

download source form site

https://sourceforge.net/projects/rkhunter/files/latest/download?source=typ_redirect

tar zxf rkhunter-1.4.4.tar.gz

cd rkhunter-1.4.4/

sudo ./installer.sh --install

By default, the log file '/var/log/rkhunter.log' will be created. It will contain the results of the checks made by RKH.

run this after making changes to the config file

check if the config file is valid:

sudo rkhunter -C

update so you dont get a warning the the config file was changed:

sudo rkhunter --propupd

run manually from command prompt without all the annoying pauses

sudo rkhunter -c --rwo

references: https://www.digitalocean.com/community/tutorials/how-to-use-rkhunter-to-guard-against-rootkits-on-an-ubuntu-vps the cronjob

#run rkhunter at 1am
00 01 * * * rkhunter --cronjob --update --quiet