cloud - getting randomly generated passwd for Ubuntu 16.04 cloudimage - Ask Ubuntu

i having hard time getting supposedly randomly generated passwd amd64 qcow2 image here:

https://cloud-images.ubuntu.com/releases/16.04/release/

i found (perhaps outdated?) instructions here:

https://help.ubuntu.com/community/uec/images

things seem have changed, , don't see line in console output, , ctrl-alt-3 serial console doesn't work me (i entered via virsh console vm_name).

you can use libguestfs-tool clear root passwd.

     sudo apt install libguestfs-tools     virt-edit -a disk.img /etc/passwd -e 's/^root:.*?:/root::/' 

see http://libguestfs.org/guestfs-recipes.1.html under "remove root password (linux)"

but why can't ubuntu put decent page on how use cloudimages novices???