_Never having to think about updates again _ is a good thing in my head, so here’s how to set up Unattended Upgrades under Ubuntu for fun and profit. $ sudo apt-get install unattended-upgrades $sudo vim /etc/apt/apt.conf.d/50unattended-upgrades Uncomment the line // "${distro_id}:${distro_codename}-updates"; $ sudo vim /etc/apt/apt.conf.d/10periodic Make it look like this APT::Periodic::Update-Package-Lists "1"; APT::Periodic::Download-Upgradeable-Packages "1"; APT::Periodic::AutocleanInterval "7"; APT::Periodic::Unattended-Upgrade "1";

Biblio Sorbi, Toni, Dio De Capua, Rossi TERA, Genova Grade 1 What is this work about? Collaborative target tracking behaviours What are the main findings of this work? No surprise; two AUVs with a comms link are better at tracking, and that tracking is easier when the targets are stupid/random. What gap in our understanding does this work fill? Highlights MLO tracking operations, and provides insight into globally aware control systems ...

Biblio Carreras, Batlle, Ridao, and Roberts; An Overview on Behaviour based methods for AUV control, Girona, Spain What is this work about? A review and analysis of four AUV behaviour based reactionary control architectures, presenting four control architectures; Scheme, Subsumption, PDL, and Action Selection Dynamics, i.e. cooperative (schema, PDL) and competitive (Sub, ASD) What are the main findings of this work? Competitive models are often easier to design as only one behaviour is resident at a time, however this leads to ’jaunty’ and often sub-optimal results, as in this case where authors say the resultant pats for both competitive models are non-optimal ...

Hold on, what? I attended a Postgraduate Training event over the weekend, ‘Starting to Write in the First year of your PhD’, presented by the brilliantly wise and entertaining Daniel Soule. What I expected: How to start writing your thesis in the first year of your PhD What I got: Start writing in the first year of your PhD, for your own sanity and academic security Now, depending on your academic background, these may sound exactly the same. They’re not. This post summarises the ‘best bits’ of the very very good course. ...

PCap files are a pain; weird format, difficult to parse viserally even if you have the ‘right’ tools handy. Wouldn’t it be easier to be able to ‘see’ the network flow, like it is in all the textbooks? Well now you can! In playing with NS-3, I came across this problem, and googled for a solution. Now here’s an end-to-end ‘I have pcap files and want to make them pretty’ solution. ...

Intro Click is a modular router library developed at UCLA, allowing Click-definied router networks to be ‘attached’ to an ns-3- nodes layer 3 functionality. It has very little relevance to my own research, but was interesting to play with. In a nutshell, Click is an extention to the linux kernel that provides a highly performant and configurable routing architecture. Requirements Already installed ns-3 git ~/src directory Get ’er dun cd ~/src; git clone git://read.cs.ucla.edu/git/click ; cd click sudo ./configure --enable-nsclick --enable-userlevel; sudo make; sudo make install ...

After a long time in the oven, Farset Labs is up and running. Unforanately we don’t have any of the crazy equipment yet, since we’re broke. As my first ‘official’ Farset Labs project, I’ve installed a ‘Big Red Button’ to notify the @FarsetLabs twitter feed and #FarsetLabs on Freenode to the status of the space. Basically, first person pushes the BRB down in the morning, then one of the directors key-unlocks the space to ‘close’ it. ...

IRC, Python, Ubuntu linux. Simples! Same as by Twitter post, but for IRC. Biggest problem with this one was working out that the IRC server needs to be kept alive with the irclib.IRC.process_once() command. This is wrapped in the while loop that assumes that there is other stuff going on for which you are waiting on a condition to be satisfied, but could easily be ignored if one is just sending out one message. Also, the PRIVMSG command can be used to broadcast to a channel, as is used here, or, as the name suggests, to communicate with a specific user. ...

Working on the Farset Labs Big Red Button for space occupancy, had to find a simple way to tweet a status. This is a post to remind myself and anyone else who has dived through hundreds of incorrect, out of date, or inapplicable examples of Oauth 2 with Twitter using a pre-generated auth-token pair. import oauth2 as oauth import urllib ckey='$CONSUMER_KEY' csecret='$CONSUMER_SECRET' akey='$AUTH_TOKEN' asecret='$AUTH_SECRET' def post_twitter(status): try: consumer = oauth.Consumer(key=ckey, secret=csecret) token = oauth.Token(key=akey, secret=asecret) client = oauth.Client(consumer, token) resp, content = client.request( postapi, method='POST', body = urllib.urlencode({"status": status, "wrap_links": True}), #headers=http_headers, #force_auth_header=True ) except oauth.Error as err: print("Twitter Error:"+err) return resp, content post_twitter("Hello Twitterverse")

This is my own self-indulgant reminder for how to do the things I like. I’ll keep adding to this as I think of them. Basic Setup Install Ubuntu Latest (currently 11.10), With the third party libraries and a home partition leaving at least 20GB for ‘/’. Then Update everything, during which time you can plod along to download the relevant packages for Chrome Beta, Dropbox, etc Once the update is done (I’d restart in most cases), additional packages I like to add are; ...