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I just installed CentOS 6.4 on my server. I've tried running sudo yum update and got the output Could not retrieve mirrorlist...snip...error was 14: PYCURL ERROR 6 - "Couldn't resolve host ''". I can't ping to other computers on the same lan or sites such as google. I just started using CentOS about 10 minutes ago and have no experience with any Unix system before this.

Any help to get me guided would be great. How do I connect to the internet?

UPDATE: Will post the results of ifconfig.

Link encap:Ethernet HWaddr 00:13:D4:DD:14:D8
inet6 addr: fe80::213:d4ff:fedd:14d8/64 Scope:Link
RX packets:120 errors:0 dropped:0 overruns:0 frame:0
TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:12210 (11.9KiB) TX bytes:344 (344.0 b)
Interrupt:22 Base Address:0x8000

Link encap:Local Loopback
inet addr: Mask:
inet6 addr: ::1/128 Scope:Host
RX packets:18 errors:0 dropped:0 overruns:0 frame:0
TX packets:18 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1512 (1.4 KiB) TX bytes:1512 (1.4 KiB)    
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Please post the output of ifconfig. – terdon Jun 3 '13 at 17:51
Done, see the update – Simon Carlson Jun 3 '13 at 17:58
Please, any help would suffice. I'm a complete beginner and hardly know what I'm doing – Simon Carlson Jun 3 '13 at 20:12
up vote 1 down vote accepted

IP(v4) on eth0 interface is not configured on your host. Configure it according dhcp or static.

After this make sure that your host can resolve server.

~ # host

Check /etc/resolv.conf content. It has to contain correct nameserver. Example :

~ # cat /etc/resolv.conf 
share|improve this answer
Thank you, helped a lot – Simon Carlson Jun 4 '13 at 1:19

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