Install howmanypeoplearearound on mac os X

howmanypeoplearearound  “calculates the number of people in the vicinity using the approximate number of smartphones as a proxy”

To do this on Mac os X first make sure that you have “brew” installed.

See the simple instructions / site hear
https://brew.sh/

Your also going to need tshark the cli version of wireshark installed

brew install tshark

Also I found using python3 important as I was having dependency problems with the standard python install

Download and install python3 from hear

https://www.python.org/downloads/mac-osx/

Then

sudo pip3 install howmanypeoplearearound

now you can observe howmanypeoplearearound !

Typical usage

sudo howmanypeoplearearound -s 300 -o scan_big2.json -a en1

(Listens to network traffic for 5 minutes writes to the file scan_big2.json in json format using interface en1 (wireless card use ifconfig -a to check that yours is named in the same manner)

 

Setting up software based raid

This is a very quick and dirty collection of notes to just get you up and running

View existing drives

lsblk -o NAME,SIZE,FSTYPE,TYPE,MOUNTPOINT

Create raid array

sudo mdadm –create –verbose /dev/md0 –level=6 –raid-devices=4 /dev/sda /dev/sdb /dev/sde /dev/sdd

 

Observe process of building

watch -n 3 -d cat /proc/mdstat

Things I like V 0.1 People

Cats are also important!

So although this blog is mainly about technical things I thought it might be nice to share things that I find interesting, exciting, frivolous, or just plain amazing.

So without further ado and no particular rhyme or reason I present you with this list!

Things I like V 0.1 People!

Oliver sacks: Such an amazing thinker, His books are well worth reading.
http://www.oliversacks.com/
https://www.youtube.com/watch?v=SgOTaXhbqPQ

C G Jung: Another great thinker who’s ideas influence me on a near daily basis.
https://www.youtube.com/watch?v=O67a8_XXqK4&t=181s

Prof Alice Roberts: Prof Alice Roberts is I think the heir apparent to David Attenborough.
https://www.youtube.com/watch?v=8-rmQjz8F0s

William Gibson: Yep it’s a geek thing, but his recent books are also amazing – one of the few people who’s books I read more than once.
https://www.youtube.com/watch?v=tj5xABJlOUU

Emily Graslie: What’s not to like about a young science communicator and YouTube educator, who among other things is not afraid to gut a wolf
https://www.youtube.com/results?search_query=the+brain+scoop

The argument for System Administration 0.1

Ganesha is widely revered as the remover of obstacles

 

So from what I can work out your humble Sys Admin is a bit like a dentist! You know it’s good for you but no one likes pain, let alone paying for that pain.

But lets just hold it there for a minute can we? Lets just stop and think about this.

John Podesta recently had his email account hacked. Of that we have evidence, have a look at this.

https://wikileaks.org/podesta-emails/

There is some discussion that his account password was, or may have been “password”, or something simple and easy to hack. What ever his password was, it probably was not that difficult to hack see this information.

But guess what? If a System administrator had been looking after that email server properly this shouldn’t have happened.

So we now have a major question over the outcome of the political leadership of arguably the most powerful country on earth. Just so you know sysadmin appreciation day this year falls on  Friday, 28 July.

Think about that! Especially if you have a good Sys admin who is looking after you and your network, and your email, and stays up late re booting the server doing stuff you never have to worry about, often stuff you don’t even care about until – whoops! Where did the election go?