Tell me more ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.
up vote 0 down vote favorite

After editing etc/hosts and hostname, 'unable to resolve host' still exist on my terminal, I still don't know what is the cause. Although my computer and my terminal runs so well. I'm only using single OS Ubuntu 12.04.1

enter image description here

enter image description here

enter image description hereenter image description hereenter image description here

share|improve this question
1  
Could you please post an example of what you type and the response you get? Also, adding more tags can broaden the viewership of your question to solicit more answers. I added dns for you just now. – Randall Cook Jan 27 at 6:37
did you reboot? – Private Jan 27 at 7:16
Yes, I did a reboot. – obetus Jan 27 at 8:59

1 Answer

up vote 0 down vote

To change the active system hostname to, e.g., 'foo' it does not suffice to edit /etc/hostname. You have to reboot or run sudo hostname foo. Also make sure that there is a line in /etc/hosts for 'foo', either

127.0.1.1 foo

if foo has no network connectivity or gets an address via DHCP, or

<IP-address> foo

if foo has a static IP address.

share|improve this answer
I followed your instruction., then reboot. I have an internet connection. But, "unable to resolve host" still there. – obetus Jan 29 at 4:49
Please show the content of your /etc/nsswitch.conf file too. – jdthood Jan 29 at 8:37
Contents of my /etc/nsswitch.conf file are now attached on the description above. – obetus Jan 29 at 11:19
I suspect that the problem is that you have selected a hostname with a capital letter. It's conventional to use all-lower-case hostnames. Try making the host name "precise" with a lower-case pee. (However, I tried changing the name of my machine to a name starting with a capital letter and didn't encounter a problem with sudo. YMMV.) – jdthood Jan 29 at 11:39
Ok, I will try. – obetus Jan 29 at 11:52
show 4 more comments

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.