Ross Donaldson Gastove

Configure Postfix for Gmail SMTP in Mac OSX Mavericks

Taken from Using MacOSX Lion command line mail with Gmail as SMTP

Edit file /etc/postfix/main.cf

sudo vim /etc/postfix/main.cf

This is my default career advice for people starting out in geo/GIS, especially remote sensing, adapted from a response to a letter in 2013.

I'm currently about to start a Geography degree at the University of [Redacted] at [Redacted] with a focus in GIS, and I've been finding that I have an interest in working with imagery. Obviously I should take Remote Sensing and other similar classes, but I'm the type of person who likes to self learn as well. So my question is this: What recommendations would you give to a student who is interested in working with imagery? Are there any self study paths that you could recommend?

I learned on my own and on the job, and there are a lot of important topics in GIS that I don’t know anything about, so I can’t give comprehensive advice. I haven’t arrived anywhere; I’m just ten minutes ahead in the convoy we’re both in. Take these recommendations critically.

Find interesting people. You’ll learn a lot more from a great professor (or mentor, or friend, or conference) o

Clojure Destructuring Tutorial and Cheat Sheet

(Related blog post)

Simply put, destructuring in Clojure is a way extract values from a datastructure and bind them to symbols, without having to explicitly traverse the datstructure. It allows for elegant and concise Clojure code.

Vectors and Sequences

This is a sequel to "Postfix: relay to authenticated SMTP".

I would like to send mail from two different Gmail accounts using Postfix. Here is the relevant section in the Postfix documentation: Configuring Sender-Dependent SASL authentication.

As a concrete example, here's how to set up two Gmail accounts (only relevant sections of the config files are listed below):

/etc/postfix/main.cf:
    # sender-dependent sasl authentication
    smtp_sender_dependent_authentication = yes

sender_dependent_relayhost_maps = hash:/etc/postfix/sender_relay

YubiKey 4 series GPG and SSH setup guide

Written for fairly adept technical users, preferably of Debian GNU/Linux, not for absolute beginners.

You'll probably be working with a single smartcard, so you'll want only one primary key (1. Sign & Certify) and two associated subkeys (2. Encrypt, 3. Authenticate). I've published a Bash function which automates this slightly special key generation process.

	Trivia problem: Generate primes between 1 and 100 million with Scalding
	Input: Numbers from 1 to 100 million, 1 per line - use a simple C program for this
	Output: Filter input for primes using the filter function on pipes in Scalding
	Execution time: 13:11:00 to 13:25:54 = 15 minutes in hdfs-local mode
	Part files: 27
	$ ls
	part-00000 part-00002 part-00004 part-00006 part-00008 part-00010 part-00012 part-00014 part-00016 part-00018 part-00020 part-00022 part-00024 part-00026 part-00001 part-00003 part-00005 part-00007 part-00009 part-00011 part-00013 part-00015 part-00017 part-00019 part-00021 part-00023 part-00025

	$ tail part-00026
	99999787