Apr 12

My password change routines in Ubuntu

12 Apr 2010

I change my passwords on a regular basis, and this is my routine for changing passwords everywhere.

Generate new password
henning@localhost:~$ pwgen

Change Ubuntu keyring password
henning@localhost:~$ seahorse
Select ‘Passwords’-tab, right click on ‘Passwords’-folder and select ‘Change password’ .

Change ssh passphrase
henning@localhost:~$ ssh-keygen -p

Mar 25

Basic authentication – CXF Tips and Tricks Part 1

25 Mar 2010

I’m starting a new blog post series with Apache CXF tips and tricks. In this first post I’ll show you how to do communicate with a Web Service together with HTTP Basic authentication.

Below is an example of HTTP Basic authentication with username ‘johnsmith’ and password ’sesame99′.

URL wsdl = getClass().getResource("myservice.wsdl.xml");
MyService service = new MyService(wsdl).getMyServicePort();
BindingProvider bp = (BindingProvider)service;
bp.getRequestContext().put(BindingProvider.USERNAME_PROPERTY, "johnsmith");
bp.getRequestContext().put(BindingProvider.PASSWORD_PROPERTY, "sesame99");
Mar 01

Ubuntu Jaunty: How to Change Gnome Keyring Password

1 Mar 2010

After changing my user password, gnome still asked for my old password when accessing my keyring.

Finally I found a blog describing the solution, thank you!

May 23

The Silver Bullet for PS3 Streaming and transcoding

23 May 2009

A while ago I bought a Sony Playstation 3 (PS3) to use it as a gaming and media box. But finding a decent video streaming solution on the linux platform turned to be quite a hassle. After a lot of time searching for the ultimate solution supporting all kinds of codecs and transcoding to the ps3, I landed on Fuppes. It wasn’t the perfect solution but it solved most of my media issues.

But then I found the ps3mediaserver-project. The feature list is huge, it supports all kinds of codecs through a ton of libraries. Runs on Java, and therefore platform-independent, Yeay!

Current features (from http://code.google.com/p/ps3mediaserver/)

* Ready to launch and play. No codec packs to install. No folder configuration and pre-parsing or this kind of annoying thing. All your folders are directly browsed by the PS3, there’s an automatic refresh also.
* Real-time video transcoding of MKV/FLV/OGM/AVI, etc.
* Direct streaming of DTS / DTS-HD core to the receiver
* Remux H264/MPEG2 video and all audio tracks to AC3/DTS/LPCM in real time with tsMuxer when H264 is PS3/Level4.1 compliant
* Full seeking support when transcoding
* DVD ISOs images / VIDEO_TS Folder transcoder
* OGG/FLAC/MPC/APE audio transcoding
* Thumbnail generation for Videos
* You can choose with a virtual folder system your audio/subtitle language on the PS3!
* Simple streaming of formats PS3 natively supports: MP3/JPG/PNG/GIF/TIFF, all kind of videos (AVI, MP4, TS, M2TS, MPEG)
* Display camera RAWs thumbnails (Canon / Nikon, etc.)
* ZIP/RAR files as browsable folders
* Support for pictures based feeds, such as Flickr and Picasaweb
* Internet TV / Web Radio support with VLC, MEncoder or MPlayer
* Podcasts audio/ Video feeds support
* Basic Xbox360 support
* FLAC 96kHz/24bits/5.1 support
* Windows Only: DVR-MS remuxer and AviSynth alternative transcoder support

Go get it now!

Mar 02

Optimize git-svn workflow with bash auto complete and Hack&Ship scripts

2 Mar 2009

I’ve just started using Git at work. We have a large and old subversion repository at work, so git-svn comes to the rescue. Git-svn provides a connection between a central subversion repository and your local git repository. This enables you to get most of the benefits git provides, while still adhering to company standards and commit code to a subversion repository.

I recommend reading Git SVN Workflow to get started with git-svn.

I had some trouble installing Git properly on my computer running Ubuntu 8.10. When executing git svn rebase I got the following message:

Can't locate SVN/Core.pm

After a lot of debugging I figured i was missing a perl library. Installing libsvn-perl did the trick:

 sudo aptitude install libsvn-perl

To get the most out of git-svn I’m using git bash completion and two small Hack && Ship scripts to automate the workflow.

Bash autocompletion

Download and install git-completion.sh

Modify your PS1 variable in ~/.bashrc to show the current branch when inside a directory in a git repository:

PS1='[\u@\h \W$(__git_ps1 " (%s)")]\$ '

Your prompt will look something like this:

neo@zion:~/dev/emp (trunk)$

Automating the workflow

The recommended git workflow is to create a branch for every new feature you work on. For your branches to be up to date you have to switch to your master branch, rebase with the svn repository, switch back to your branch and then rebase your branch with the master. This is 4 commands that can be automated.

hack.sh

#!/bin/bash 
CURRENT=`git branch | grep '\*' | awk '{print $2}'`
status=`git checkout master | awk '{print $1}'`
if [[ ! "${status}" =~ error ]]; then
        git svn rebase 
        git checkout ${CURRENT}
        git rebase master
fi

After making sure your branch is up to date you’ll want to merge your branch with the master and then push your changes to the central repository (the subversion repository):

ship.sh

#!/bin/bash
CURRENT=`git branch | grep '\*' | awk '{print $2}'`
git rebase -i master
status=`git checkout master | awk '{print $1}'`
if [[ ! "${status}" =~ error ]]; then
        git merge ${CURRENT}
        git svn dcommit
fi

About

Henning Jensen
IT-Consultant at BEKK

Here you will find some of my thoughts and experiments from my daily life of programming and general geeking ;)

  • MaDmAtT: Please, could you plublish your installaiton guide on Ubuntu for the PS3mediaserver app. I don't why [...]
  • Jamie: it looks like its working a treat thank you [...]
  • Jamie: looks good am having stuttering problems with windows media this looks like the idea solution [...]
  • Avayan: Saw this linked from http://www.shell-fu.org/lister.php?id=573 This is a really good tip though [...]
  • BJ: Hey.. I found it pretty exciting... + 10 in my book.. :) [...]

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