How to use the public key in Ubuntu 12.04 - graph-tool

28 Jun 2012

      Hi, all friends!
   I want to install graph_tool in Ubuntu 12.04.
   I add the source to my sources.list and update the source.
   It replys "W: GPG error: http://downloads.skewed.de oneiric Release: The
following signatures couldn't be verified because the         public key is
not available: NO_PUBKEY 697EC21F15F95514"
   I don't know how to add the public key.
   I tried to save
F36FE35Dhttp://pgp.skewed.de:11371/pks/lookup?op=get&search=0x04DC461EF36FE35Din
keyfile and "sudo apt-key add keyfile" .
   But it says"gpg: no valid OpenPGP data found."
   What is this problem? Thank you for your suggestion.
2012/6/26 graph-tool-request@skewed.de
...
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Today's Topics:

Re: Re ?What GNU/Linux distribution do you have, Debian or
Ubuntu? What version? (Tiago de Paula Peixoto)

Message: 1
Date: Tue, 26 Jun 2012 10:47:46 +0200
From: Tiago de Paula Peixoto tiago@skewed.de
To: Main discussion list for the graph-tool project
       graph-tool@skewed.de
Subject: Re: [graph-tool] Re ?What GNU/Linux distribution do you have,
       Debian or Ubuntu? What version?
Message-ID: 4FE97732.10009@skewed.de
Content-Type: text/plain; charset="utf-8"
Hi,
I've released a new version of graph-tool (2.2.17). Could you please try
again
with apt-get?
I tried it on an ubuntu machine, and everything worked nicely...
Cheers,
Tiago
On 06/15/2012 02:40 PM, ?? wrote:
...
My linux version?Ubuntu 12.04
GCC version?4.7
My problem comes up when compiling /layout/graph_sfdp.
I have tried to used arch linux instead, but everything messed up when
configuring network :(
...
2012/6/15 <graph-tool-request@skewed.de <mailto:
graph-tool-request@skewed.de>>
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Today's Topics:

  1. (no subject) (??)
  2. Re: (no subject) (Tiago de Paula Peixoto)

...
Message: 1
Date: Thu, 14 Jun 2012 20:29:11 +0800
From: ?? <renq654321@gmail.com <mailto:renq654321@gmail.com>>
To: graph-tool@skewed.de <mailto:graph-tool@skewed.de>
Subject: [graph-tool] (no subject)
Message-ID:
       <CAM7UdKggw3JcoV3wpxSEU2ygD9Fh0MO5SK2hV9mPhbLR=

wPa1w@mail.gmail.com mailto:wPa1w@mail.gmail.com>
...
Content-Type: text/plain; charset="iso-8859-1"

HI everyone!
 I have tried to install graph_tool by compiling source code.But for

many
...
times , it reports:
             virtual memory exhausted: Cannot allocate memory
 My PC has a 4G main memory and Intel i5 CPU.I thought 4G is enough.

 Then I tried to install by apt-get, and came up with a problem.
 I have already installed these library before, and versions are

right.
...
graph-tool : Depends: libboost-iostreams1.42.0 (>= 1.42.0-1) but it

is not
...
installable
             Depends: libboost-python1.42.0 (>= 1.42.0-1) but it is

not
...
installable
             Depends: libboost-regex1.42.0 (>= 1.42.0-1) but it is

not
...
installable
             Depends: libcgal5 but it is not installable
             Depends: libpython2.6 (>= 2.6) but it is not installable
             Depends: libboost1.42-dev but it is not installable

 Can anyone help me ?
 By the way,how to use the public key ?
 I have tried "apt-key add signature.asc",but it reports:
             gpg: no valid OpenPGP data found.