Blog Tags: 
development
design
pythonic

Python's timeless principles of good software

Liraz Siri - Sun, 2015/10/04 - 17:27 - 1 comments 
$ python -c 'import this'
The Zen of Python, by Tim Peters

Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the temptation to guess.
There should be one-- and preferably only one --obvious way to do it.
Although that way ma
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development
debug

Bug hunting with the scientific method

Liraz Siri - Sun, 2015/10/04 - 17:27

I've never come across a problem I couldn't solve using the following technique / problem solving methodology, and I've come across some tough ones.

http://en.wikipedia.org/wiki/Scientific_method

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news
development
debian
community
appliances
release
stable

v14.0 stable release - Massive Community Effort!

Jeremy Davis - Thu, 2015/09/17 - 10:44 - 30 comments

Drum roll please... May I proudly introduce: The TurnKey Linux v14.0 release!

turnkey 14.0 banner

A long time coming...

Wow is it mid September already!? What has happened to the year?!

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news
development
debian
core
community
appliances
release
rc
tkldev

Marching towards v14.0 RC2

Jeremy Davis - Tue, 2015/06/23 - 14:55 - 12 comments

Update: v14.0 stable is available in all build types: OVA & VMDK, Proxmox, OpenNode & Docker (Proxmox build is somewhat generic LXC/OpenVZ container) and Xen & OpenStack.

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development
community
tutorial
tkldev
howto
iso
diy

How to build a TurnKey appliance ISO from source

Jeremy Davis - Thu, 2015/05/28 - 16:49 - 2 comments

[UPDATE:] This blog post has been converted to a Doc page and has had some updates since this post was published.

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news
development
debian
core
community
appliances
release
rc
tkldev

TurnKey v14.0 RC1 is LIVE! (aka we need YOU!)

Jeremy Davis - Tue, 2015/05/12 - 13:33 - 41 comments

Update: v14.0 stable is available in all build types: OVA & VMDK, Proxmox, OpenNode & Docker (Proxmox build is somewhat generic LXC/OpenVZ container) and Xen & OpenStack.

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development
tips

Invalidating the disk cache on Linux

Liraz Siri - Mon, 2015/05/04 - 08:05 - 2 comments

Here's a super easy way to invalidate the disk cache, which is useful for testing IO performance in the real world, where you can't rely on all of your reads being served up from a super-fast RAM cache rather than a vastly slower physical disk drive.

This will free up everything in the disk cache:

echo 3 > /proc/sys/vm/drop_caches

Or if you want more control over exactly what is being freed...

  1. This frees up the pagecache (e.g., cache of contents of files):

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development
python

pyproject-pub: A simple Python project template

Liraz Siri - Mon, 2015/04/27 - 08:55 - 3 comments

I hate repeating myself. It's boring. Life is too short. Like any self respecting hacker I will go out of my way to avoid it, even when I suspect it would cost me more to automate something away than to just do it by hand.

On the other hand, doing stuff I've done before by hand is no fun, while writing scripts is fun. Even when it does take longer, time is relative, or so Einstein said.

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development
python
lisp

Getting started with Python and Lisp

Liraz Siri - Mon, 2015/04/20 - 00:00 - 1 comments

A few weeks ago I talked with a friend studying computer science who I discovered had never experienced the joy of programming with a high level language. Not only that but he didn't have the first clue what he was missing. I feared without my immediate intervention another perfectly good mind would be wasted in programming hell. At his university they were using Java for nearly everything so he had somehow gotten the terribly mistaken idea that it didn't really matter what programming language one used. I carefully explained that:

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development
cloudtask

Why parallel programming is hard

Liraz Siri - Mon, 2015/04/06 - 08:35

Implementing Cloudtask took more time than I had planned due mainly to the challenges of parallel programming, which I hadn't done that much of before. Also, parallel programming really is inherently far more difficult than serial programming.

In my mind there are three major challenges:

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