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Vagrant up in the cloud (DigitalOcean)

It's quick and easy to start your virtual machine in the cloud if you use vagrant. Like, 55 seconds fast. I find it especially handy for toy projects that I need on the web quickly or when I don't want another virtual machine to gobble up resources on my laptop. I'm going through the steps for DigitalOcean. It's similarly easy for Amazon Web Services (AWS), but I find their web interface somewhat discombobulated.

A word on pricing: if you use the cloud for a small project it's basically free. A full day on Digital Oceans costs 16 cents. That's (hopefully) less than you tip on a cup of coffee. There are a lot of online coupons that'll get you through the first few months. AWS offers a full year for free, see

I'm assuming that you have vagrant installed and a Vagrantfile already written or generated with vagrant init. Ok, let's get started! First, download the vagrant plugin.

vagrant plugin install vagrant-digitalocean
Sign …
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PHP Opcodes

First, what is an Opcode? It's a compiled form of a PHP script, similar to Java bytecode. Or, more precisely, from

"When parsing PHP files, Zend Engine 2 generates a series of operation codes, commonly known as "opcodes", representing the function of the code."

<?php $a = "Hello "; $b = "World\n"; echo $a . $b;
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It should say

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Book recommendation: A PhD Is Not Enough: A Guide To Survival In Science

I've recently read this small book, I devoured the 128 pages within two hours. Thought written in 1993, I think it is still highly accurate.

Feibelman, a physicist,  describes several cases of unsuccessful scientific careers, despite hard work and intelligence. He points out the problems and gives advise how to avoid them.

Every scientist should read his book early in grad school, refresh his memory when finishing grad school, and again when mentoring graduate students.

A PhD is Not Enough on Amazon

Academic Job Search: Writing a good CV, research statement, and teaching statement

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Please keep in mind that I was specifically looking for post doctoral research positions in mathematical biology. If you want to land a teaching or tenure position, some rules might be different.
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And here comes a very long line. And here comes a very long line. And here comes a very long line.  \\

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