Am Freitag, 14. Dezember 2012, 16:10:07 schrieb Uwe Brauer:
1st: can you
log in as root or switch to root account using 'su -' ?
no!
that is bad.
always set a password for root before messing around :)
(sudo passwd root)
2nd: you can
always install a new sudoers file from a live CD as long as
your file system is not encrypted..
it is not encrypted, but suppose I use a say Kubuntu 10.04 live CD, how
do install the new sudoers file?
well, you can download a sample file from the internet or, if you still have a
default sudoers file, edit that from the live cd.
mount your HD first, of course.
werner