Ottawa Valley SAGE

Providing a forum since 1998

Apr 21, 2016 - 2 minute read

Post April Follow-Up

Not a lot of follow-up for the talk this evening. All the salient details are in the slides in the downloads area. I’m finding the use of browser based slides to be quite liberating and with a little luck I won’t be using an office suite for any presentations in the future.

As a result of this, next month there will be a short talk on generating browser based (HTML5) presentations. It will be a full interactive session, so you might want to have a computer handy that runs python and pip. It will be a lot more interesting if you participate.

Mar 18, 2016 - 1 minute read

March Followup

It’s time again for an update after the meeting. Somewhat better turnout than last month (by one person). The talk was short but somewhat interesting. Of course, finding a practical usage case is entirely based on what you do for a living.

Interestingly enough, after the meeting, while I was getting the slides into a format for the website, I ran across a github project that covered a number of usage cases for Jupyter Notebooks. As a matter of fact, it is a supplement to an O’Reilly book - Mining the Social Web which is available via the notebook viewer.

Feb 23, 2016 - 2 minute read

Post February Update

Not too much to say after the Thursday meeting. Small attendance, small topic.

We had a new person show up, so it wasn’t the best night for me to have lost my presentation. I’ve had ghost copies of presentations hang around for ages and not be able to get rid of them. In this case though I fat fingered a response and lost my talk. No recovery, no temp copies, nothing. I tried to recover but I had nothing going for me. I thought I had saved it at least once under the new name, but no such luck. Lost without a trace, so it was a bit of a ramble on the topic rather than an actual presentation. This woule be the one time Powerpoint behaved as it is supposed to do.

Jan 19, 2016 - 2 minute read

Access control headers

I visited the site yesterday and all of the social media icons had turned into hollow squares. I thought that was a little odd, given that it had been working before that so I checked to make sure the fonts were being served. The logs showed that the requests were most assurredly being getting served, so I was left with a new mystery. I really dislike surprises when I have made no changes to something. More investigation required.

Jan 4, 2016 - 2 minute read

OSX and the dd command

In prepartaion for building one of those Raspberry Pi clusters for a demo, I was dumping the raspbian image to a 8GB class 10 SD card on my macbook pro. The write speed was abysmal…

laptop:~ user$ sudo dd if=./2015-11-21-raspbian-jessie.img of=/dev/disk2 bs=1m
Password:
3752+0 records in
3752+0 records out
3934257152 bytes transferred in 4278.617339 secs (919516 bytes/sec)
laptop:~ user$ diskutil eject /dev/disk2
laptop:~ user$ 

For those who care, that is roughly 73.5 minutes, to dump just shy of 4 GB of data.