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I just installed Ubuntu 12.04 LTS 64bit on my computer. I would like to install a F.E.M solver named Code_Aster but i need to install the following dependencies before this:

gfortran, g++, python-dev, python-numpy, python-qt4, zlib1g-dev, liblapack-dev, libblas-dev, tk, grace, bison and finally flex

I tried to run the following command to get them :

sudo apt-get install \
gfortran g++ \
python-dev python-numpy python-qt4 \
zlib1g-dev liblapack-dev libblas-dev \
tk grace bison flex

But it did not work. As the output of the terminal was rather long I tried to install them one by one and get the following messages :

[sudo] password for redg: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package gfortran

to solve this I already read : this discussion and tried to install gfortran "munally" with this file but I failed in both ways.

For python-numpy I get the following

redg@OkDesu:~$ sudo apt-get install python-numpy
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package python-numpy

If found this on the internet but it did not help much. It only confirmed the module was not installed.

As I get similar errors with the other libraries I suggest we just focus on gfortran for now.

Thank you in advance for your help !

Edit1: I failed to mention I failed to mention i'm using a proxy but everything seems to be fine on this side. This is what i found in the apt.conf file :Acquire::http::proxy "";

share|improve this question
Try using sudo apt-get update, then installing after – DaboRoss Jun 12 '13 at 7:43
Thanks for replying DaboRoss. In fact I already tried that as well as : 'code' sudo aptitude -o Acquire::http::No-Cache=True -o Acquire::BrokenProxy=true update sudo apt-get update 'code' – user166533 Jun 12 '13 at 8:13
up vote 0 down vote accepted

You can always try a

sudo apt-cache search "package-name"

to see if the package has been named differently in the repository

share|improve this answer
Thank you very much, I just tried it and seems to be working. It seems like I have to specify the version if I want apt-get to work. I feel stupid for not thinking about it... I will mark this Solved as soon as I am done. Thank you again for your help – user166533 Jun 12 '13 at 23:47
Everything has been working fine since gfortran has been isntalled. 'apt-get install python-numpy' even worked without having to write anything elee. I'm not really sure what happened. Anyway case closed. Thank you all for replying. – user166533 Jun 13 '13 at 1:28

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