Ah, the good ol' pipe through sudo bash installation instructions. I wish there was a more structured platform independent way of distributing stuff before the stuff is packaged by distros.
http://drj11.wordpress.com/2014/03/19/piping-into-shell-may-...
And you have the option to install it manually if you want https://github.com/draios/sysdig/wiki/How%20to%20Install%20S....
Does appear to build fine with cmake/make, though.
An https link should be the default IMHO.
edit: the tool looks really useful though.
https://s3.amazonaws.com/download.draios.com/stable/install-...
We'll update the page in a second