I effectively have a sticky keyboard (host machine to RDP to vCenter to virtual console), but need to update the password of a VM I am building.
Using the rescue environment CentOS media offers, I can
chroot to the installed system and run
passwd, but after typing the password once, I inevitably get an error that the password tokens do not match. (Sometimes typing "passwd" echoes back "passsswwdddd" or similar on the commandline.)
How can I update root's password without needing to enter it twice?
Because I don't know the password, I cannot ssh (which would eliminate the sticky keyboard issue) - hence using a rescue environment and