Monthly Archives: November 2017

Cent OS 7 fix yum against another client

The problem: I did some experiments on one of my clients, resulting on a client that is having a different package list than the other. I will call that client B. Let’s call the ‘healthy’ client A. When you make … Continue reading

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A docker Hello World on Cent OS 7

Previously I gave you my recipe for containers on Cent OS 7. Now we are going to enable dockers and play a little with them. I’m following a version of this guide to dockers on Cent OS 7. Actually it’s … Continue reading

Posted in bits, centos, containers, docker, hardware, linux, programming | 2 Comments

Python/WXpython Hello World

Welcome back to the fantastic world of computing. Today we’re going to learn the difference between  python and wxpython. First we need to be sure we have “some” python in our system. For that we need a shell (the black … Continue reading

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C/C++ Hello World

Since this is my first article, I’m going to start without a long explanation. I will suppose you have a bash shell. You need to check that you have a compiler. As an user, you can type user@machine$ > which … Continue reading

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Basic Hellos

I’m going to start from tomorrow on a serie of posts about how to start programming on a selection of the most popular languages. My very ambitious aim is to demonstrate that, once you know the grammar, all the languages … Continue reading

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A leginon CentOS 6 container on CentOS 7

Continuing with our cooking recipes, I’m going to install leginon on a CentOS 6 container running on CentOS 7. We start creating a CentOS 6 container: lxc-create -n centos6 -t download — -d centos -r 6 -a i386 lxc-start -n … Continue reading

Posted in bits, centos, containers, EM, hardware, leginon, linux, mysql, python | 1 Comment

CentOS 7 error while loading shared libraries: libfftw3.so.3

Case description: on my centos7 container, I sync ProgramX from the container host (centos 7 also) and when I try to run it, I get the error. ProgramX: error while loading shared libraries: libfftw3.so.3: cannot open shared object file: No … Continue reading

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