I'm new here, hope to not be obnoxious... I've been using linux systems for a long time (work in science), but have only minimal experience as administrator. And today, following insomnia, I found myself typing (as root):
yum remove `package-cleanup --leaves`
I am not usually quite so stupid... (I had intended to upgrade from fedora 12 to 15) But now I can't login at all (either as the normal user or root), though the machine seems to boot properly. Currently I'm using a live distro on a usb key. Can this be undone? Can anyone help please please please?