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Today I hit an important milestone for etnaviv – an open source user-space driver for the Vivante GCxxx series of embedded GPUs. I finally got GC2000 support to a level that it seems to work. It took me some months to get there. At the beginning it sounds easy to rebuild a ‘driver’ if you get readable command buffer dumps. I did start with working on a simple replay program to render a cube in the same was as the binary blob does it. But what should I say… it is quite boring to do everything by hand and not taking advantage of libetnaviv and the ‘driver’ at all. So I decided to go the hard way and try to fix/add all missing bits until it renders something. The good thing is that I have now some knowledge about the structure of libetnaviv, the dirver and mesa in general. It helps a lot if you know why stuff is done that way. ...

Today I needed to rebase my etnaviv fork to the current master of upstream. I need to say that I never did this before but with git this is a breeze. View the code on [Gist](https://gist.github.com/austriancoder/724a0a8d1db4f229e197d501f8b49fa5).If you get a merge conflict during rebase, you only need to follow the instructions git gives you.

I am using cmake during my job to create Debian installation packages for different kind of software projects. Today I run into an issue. I needed to run some post installation steps. I know that this is quite easy possible within a deb file, but how to archive the same with cmake? It turned out to be quite easy: View the code on [Gist](https://gist.github.com/austriancoder/1c3ba1d383fefbf8dd7fe773cebd882d).Where postinst is the script which gets executed after the deb got installed.

You may know this situation: You have seen a shell command, looked in the man page but you are no really sure what it does? It solution to this problem is quite easy: http://explainshell.com/ The best thing is that the source code is released under GPL and can be found at GitHub

Sometimes it is needed to recreate the used ssh host keys and this can be done quite easy on a Debian based system. View the code on [Gist](https://gist.github.com/austriancoder/65c4f0141bdea7f565c1aed21404fd19).