Category Archives: FLOSS

articles on Free/Libre & Open Source Software

CentOS – find packages provided by repositories

A quick note to myself… This is what I do when I need to find which packages are provided by a certain repository. First I update the list of the available packages:

# yum check-update

then I do a listing of them (bold is mine):

# yum repolist
Loaded plugins: fastestmirror, security
Loading mirror speeds from cached hostfile
* base: mirrors.prometeus.net
* epel: fr2.rpmfind.net
* extras: mirrors.prometeus.net
* updates: mirrors.prometeus.net
Excluding Packages from CentOS-5 - Base
Finished
Excluding Packages from CentOS-5 - Updates
Finished
repo id repo name status
base CentOS-5 - Base 3,612+29
epel Extra Packages for Enterprise Linux 5 - x86_64 7,241
extras CentOS-5 - Extras 266
updates CentOS-5 - Updates 95
repolist: 11,214

At this point, if I need to find what packages are provided by the EPEL repository and write that list on a file, I’ll simply digit:

# rpm -qa | grep epel > epel-list.txt

The Debian Administrator’s Handbook

Written by two Debian developers — Raphaël Hertzog and Roland Mas — the Debian Administrator’s Handbook started as a translation of their French best-seller known as Cahier de l’admin Debian (published by Eyrolles).

It’s a fantastic resource for all users of a Debian-based distribution.

Accessible to all, this book teaches the essentials to anyone who wants to become an effective and independant Debian GNU/Linux administrator.

Given that traditional editors did not want to take the risk to make this translation, we decided to do the translation ourselves and to self-publish the result. After a successful crowdfunding campaign, we managed to complete this translation between December 2011 and May 2012.

To live up to our free software ideals, we wanted the book to be freely available (that is under the terms of a license compatible with the Debian Free Software Guidelines of course). There was a condition though: a liberation fund had to be completed to ensure we had a decent compensation for the work that the book represents. This fund reached its target of €25K in April 2012.

via The Debian Administrator’s Handbook.

how-to customize the login screen of Fedora 16

I must admit being away from GNU/Linux desktops’ evolution dealing everyday with CentOS and Ubunutu 10.4 via CLI. Distributions that, anyway, are far away from the frantic evolutions in terms of desktop environment UX provided by the most up-2-date trends.

But I’m preparing a virtual machine for a bioinformaticians’ post PhD course and we choose a modern distro for this. Given my skills and experience the choice went over Fedora.

So I’m playing a little around to see how the Gnome Shell behaves and decided, since I have some spare time, to customize it a little. I could not ever imagined in my wildest dreams that modifing GDM login screen would be such a PITA.

Luckily enough a 2010′s post from Alvin T. Enguillo is still the easiest method (and with this I’ve said it all if you read the article) to achieve this goal.

Image

So, do you like the result?