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Notes from development and other observations.

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Vagrant
Vagrant quickstart reference: vagrant init → create Vagrantfile file in current directory. vagrant up → start up virtual box based ...
Parsing
Basics of simple parsing. LR: left-to-right, rightmost derivation LL: left-to-right, leftmost derivation LALR: look-ahead left-to-right, rightmost derivation
Github Pages
Github pages are great, but they will only serve files from a branch in your git repository named gh-pages. (I ...
ls output
ls results setuid bit. Denoted by s (directories) or S (files) in the permissions block of ls results, it only ...
Chrome extensions
How to add third-party extensions to Chrome, like from www.chromeextensions.org. $ open ~/Library/Preferences/com.google.Chrome.plist Add a Key at the root level called ...
Oh linux
Just getting started: remote$ sudo useradd chbrown -G wheel remote$ sudo passwd chbrown local$ ssh-copy-id chbrown@remote OR: remote$ cd ~ && ...
Nunberg simile
I just thought this quote from Geoff Nunberg was fun: It’s like hearing someone warn of grave domestic security threats ...
K-means++
So K-Means++ is just K-means, except instead of choosing initial centroids at random, you choose centroids that are furthest away ...
Tr
tr is a hard-to-search-for command, but very useful. Convert tsv to csv: cat names.tsv | tr '\t' ','
Flickr misplacement
I don’t know who this is, or what they’re referring to. http://www.flickr.com/photos/white_ribbons/5902656773/ But I kind of like the idea that this person ...
Android
Just got an Android phone, HTC Evo V. It is a pile of frustrations. Did anybody actually design this thing? ...
Javascript semicolons
Apparently (says mislav), semicolons are totally unnecessary except for one case: “When a line starts with parenthesis, prepend a semicolon” ...
Maxine
I’m on this listserve thing called “The Listserve” where it’s like 20K people and each day one person wins the ...
Girls and Their Hair
Just launched my photography website: GirlsAndTheirHair.com My given name + last name + “photography” is dreadfully saturated on Google: www.google.com/search?q=Christopher+Brown+Photography So, ...
Monitoring
There’s a door here in Harpa that has a doorbell, one of those velcro wireless things. At least, that’s what ...
Usermod
I look this up probably once every two months: # Add the existing user "chbrown" to the existing group "sudo" usermod ...
Quora age envy
Interesting snippet from a Quora question on envy, by a guy Matthew Manning: You have ZERO idea what their personal ...

Reference

Angular.js

Awk

Bash

CSS

Clojure

DOM

Flickr

Geo

Git

GitHub

HTTP

Haskell

IMAP

Iptables

JavaScript

Launchd

Make

Mechanical Turk

NPM

Node.js: http

Node.js: stream

PDF

PostgreSQL

React

SSL

Scala

TeX

Twitter

TypeScript

Unicode

Vim