Cannot use apt-get to install

[Frut02]

Hi,

 

I was asked to set up a Debian virtual machine for the computing course in school. Set up wasnt a problem. It does everything they need to do for the assesment create folders and create users ect.

 

One thing they need to do is install tree so we are doing sudo apt-get install tre. The message i get is E: unable to locate package tree

 

 

I have made sure that the proxy settings are correct but i still get presented with that message.

 

I have also tried to add in additional sources into the sources.list but i still get the same result. Does anyone have any ideas how to make it install the darn program?

 

Thanks in advance!

 

Nick

[bladedanny]

In terminal type

 

export http_proxy="http://proxy:port"

 

Then try running

 

sudo apt-get update

 

Then try to install the program.

[Frut02]

Hi,

 

I've just tried that, and i got this... i noticed that it had removed my proxy settings from the system.

 

added them back in and reran the update looked like it was going to do something then this

[jinnantonnixx]

Looks like your networking is wonky.

 

Type this

ip addr

 

and post the result.

[jinnantonnixx]

Another thing, apt (the tool to install software) can use its own configuration file.

I tend to configure this independently of other settings.

 

I'm betting that your proxy expects domain credentials, so here's how you do this.

 

Edit the file /etc/apt/apt.conf (e.g. sudo gedit /etc/apt/apt.conf)

and paste these values in, substituting your values where appropriate. Don't forget the semi-colons on the end of the lines.

Acquire::http::proxy "http://DOMAIN\USERNAME:PASSWORD@PROXYSERVER:PORT/";
Acquire::https::proxy "http://DOMAIN\USERNAME:PASSWORD@PROXYSERVER:PORT/";

Edited February 24, 2015 by jinnantonnixx

[cpjitservices]

looks like DNS settings to me... try using 8.8.8.8. on the system network settings.

 

See if you can ping the repos.

[Geoff]

You VM is trying to use IPv6. Do you have full IPv6 connectivity across your LAN and out to the Internet?

[Frut02]

I have stopped it using IPv6 as far as i can see its using a DHCP address that it is getting from my network adapter

 

i can ping the address and everything else.

[CyberDrac]

We had to ensure that, as there was no opportunity for the user to type in credentials, all the necessary repositories had to be put into Authentication Exception on our filtering device