sudo problem/question

[Tom H]

On Mon, Apr 12, 2010 at 1:53 AM, Kipton Moravec <kip at kdream.com> wrote:
> On Mon, 2010-04-12 at 01:24 -0400, Tom H wrote:
>> On Sun, Apr 11, 2010 at 11:46 PM, Kipton Moravec <kip at kdream.com> wrote:
>> > When I try to use sudo on one of my 8.04 Ubuntu computers I get the
>> > message
>> >
>> > sudo: unable to resolve host violet
>> >
>> > It then asks for the password.
>> >
>> > The prompt is kip at violet:
>> >
>> > So part of the machine knows it is violet.
>> > violet is the name of the machine in the System -> Network -> General
>> > (Tab) -> Host Name: field.
>> >
>> > How do I fix it so the warning does not appear?
>> >
>> > I tried adding an alias in the hosts as it had
>> >
>> > 127.0.0.1 localhost violet.Workgroup
>> >
>> > so I changed it to
>> >
>> > 127.0.0.1 localhost violet.Workgroup violet
>> >
>> > but that did not fix it.
>>
>> Please post
>> cat /etc/hostname
>> cat /etc/hosts
>>
> kip at violet:~$ cat /etc/hostname
> violet
> kip at violet:~$ cat /etc/hosts
> 127.0.0.1 localhost
> 127.0.1.1 violet.home violet.workgroup violet.WORKGROUP

You have to boot into single/recovery mode and add violet to the 127.0.1.1 line.