Archive for category it industry

Manhandling windows with applescript

I’ve been setting up a Cuckoo cluster and the most tedious part of that involves configuring the guest VMs. To make a long story short, I needed to manually set the IP address of all my guest VMs. At first I started doing this the visual way by clicking through all of the windows settings menus. This quickly got tedious so I developed an applescript which opens the command prompt in administrative mode, bypassing the stupid user warning, enters the command to change the ip address of the box, and then closes the command prompt. If you have a task which involves monkeying with a windows system using Screen Sharing on a mac, I hope you find this little script useful.

tell application "Screen Sharing"
	activate
	
	delay 1
	
	tell application "System Events"
		-- Open an administrative command prompt
		key code 53 using control down
		delay 2
		keystroke "cmd"
		delay 1
		key code 125
		key code 126
		key code 76 using {shift down, control down}
		delay 2
		key code 123
		key code 76
		delay 2
		
		keystroke "netsh interface ip set"
		delay 1.2
		keystroke " address name"
		key code 24
		keystroke "\"Local"
		delay 1.2
		keystroke " Area Connection\""
		delay 1.2
		keystroke " static"
		delay 1.2
		keystroke space

		-- Numbers have to be entered by key code. Otherwise they are interpreted as control characters
		key code 18
		key code 25
		key code 19
		key code 47
		key code 18
		key code 22
		key code 28
		key code 47
		key code 23
		key code 22
		key code 47
		key code 18
		key code 29
		-- This is the part that needs to change
		-- key code 29 -- 0
		-- key code 18 -- 1
		-- key code 19 -- 2
		-- key code 20 -- 3
		-- key code 21 -- 4
		-- key code 23 -- 5
		-- key code 22 -- 6
		-- key code 26 -- 7
		key code 28 -- 8
		-- key code 25 -- 9
		
		keystroke space
		delay 1.2
		
		key code 19
		key code 23
		key code 23
		key code 47
		key code 19
		key code 23
		key code 23
		key code 47
		key code 19
		key code 23
		key code 23
		key code 47
		key code 29
		
		keystroke space
		delay 1.2
		
		key code 18
		key code 25
		key code 19
		key code 47
		key code 18
		key code 22
		key code 28
		key code 47
		key code 23
		key code 22
		key code 47
		key code 18
		
		delay 1.2
		
		-- Send the command
		keystroke return
		
		delay 2
		
		-- Exit the command prompt
		keystroke "exit"
		keystroke return
	end tell
end tell
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Simple PhantomJS web scraping script

Here is a simple web scraping script I wrote for PhantomJS, the immensely useful headless browser, to load a page, inject jQuery into it, and then scrape the page using a user-supplied jQuery selector.

page = require('webpage').create()
system = require 'system'

phantom.injectJs "static/js/underscore-min.js"

page.onConsoleMessage = (msg) ->
    if not msg.match /^Unsafe/
        console.log msg

scrapeEl = (elselector) ->
    rows = $ elselector
    for el in rows
        if el.innerHTML
            str = el.innerHTML.trim()
            if str.length > 0
                console.log str

page.open system.args[1], (status) ->
    if status isnt 'success'
        phantom.exit 1
    else
        page.injectJs "static/js/underscore-min.js"
        page.injectJs "static/js/utils.js"
        page.injectJs "static/js/jquery-1.8.2.min.js"
        page.evaluate scrapeEl, system.args[2]
        phantom.exit()

Run it with:

phantomjs scrape_element.coffee "http://www.moviefone.com/coming-soon" ".movieTitle span"

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Tracking the trackers

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MongoDB Security Considerations presentation at MongoSF 2012

Here is a presentation I gave at MongoSF 2012 on unique security considerations for MongoDB.

And here are my slides.

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node.js at Facebook

Slides

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Hollywood vs the internet

[HT Forbes]

PROTECT IP Act Breaks The Internet from Fight for the Future on Vimeo.

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How Intellectual Property Hampers the Free Market

[HT Mises Blog]

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Open-source blueprint for civilization

[HT Mises Blog]

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Ted Talk: Visualizing Humanity with Aaron Koblin

[HT Infosthetics]

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Lessig: Copyright isn’t just hurting creativity: it’s killing science

[HT Mother Board]

The Architecture of Access to Scientific Knowledge from lessig on Vimeo.

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