FUN WITH LINUX

Running LED on a Tiva-Board TM4C1294XL

1 October 2015

For my studies I have to work with the Tiva-Board TM4C1294XL. I was quite lost when I tried to find examples in the internet. For all the poor souls who have to work with the tiva-board TM4C1294XL, I am going to publish the code I have to write on it. Here is some simple code for a runnig LED-light. If you push the USR1-button, it will change it’s direction.

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The Rule Of Three (Part 1)

28 September 2015

A sysadmin needs his tools. I really need at least 3 tools to be productive:

  • Terminal-Emulator (or screen/tmux if I am working without X)
  • Shell
  • Editor

This is my Rule Of Three. Those 3 tools can make my life much easier. Therefore I have to choose those tools wisely. And of course I have to know them very well, so I can get all the benefits of them. In this article I want to introduce my favourite terminal emulator: urxvt

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Nagios: cleaning up nagios-logs

24 September 2015

I’ve found an interesting article about cleaning up nagios-logs.

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facts2dw

24 September 2015

facts2dw.rb is a simple script which converts ansible(tested with1.9.2) facts into dokuwiki-format and uploads it via xmlrpc-interface into dokuwiki This script uses http-basic-authentication and ssl to login into dokuwiki. Ansible caches all the facts in <ANSIBLE-DIR>/facts so it is quite easy to import all facts into dokuwiki using the following line:

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git: keeping track of configurations with etckeeper

23 September 2015

We all know it: days after “someone” did changes on a system, somebody finds out that anything doesn’t work properly. And then we have to figure out who has made those changes. “was it me? was it my colleague? was it one of the developers?” and so on… Keeping track of all the changes in the configurations-files would be very nice. We could see the differences of the configurations and we could just rollback to an old state. Beside this we alsohave more opportunities to find out who has made those changes. V ersion C ontrol S ystems is what we need in those cases and etckeeper is a very nice wrapper for well known versioncontrolsystems.

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Kolab 3.2 on debian jessie: filters dont work

18 September 2015

If you have installed Kolab 3.2 on Debian Jessie and if you are using SSL, you might have problems with sieve-filters. If I click on Filters(in webmail), I’ll recieve the following error: “Unable to connect to server”.  /var/log/mail.log shows me:

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