sudo apt-get install systemd

Don't people hate systemd? I don't use linux enough to have an opinion on systemd, but I see a lot of disdain for it.

I think the recommendation for clamav is pretty useless for linux, especially when the clamav size is quite taxing for a server with limited storage, rkhunter would be a more appropriate recommendation.

What a shit article.

Just reference this: https://wiki.archlinux.org/index.php/security