Linux

Lightening talk I gave at SASAG on Sept 12, 2013.

Quick intro to using netcat and gnutls-cli to interact with HTTP, IMAP and SMTP and debug problems.

I Used reveal.js and shellinabox to do the magic. Shellinabox is run inside an iframe. I created a user to run the examples as during the demo (sasag), then started multiple shellinabox runs using a bash script.…

Talk I gave at puppetconf2013 on using exported resources to dynamically configure your system. Using augeas and concat the examples build up a working dns implementation that is automatic. The system was simplified a lot for the talk but the principles of using exported resources to configure the system is powerful.

Puppet posted the video.
The slides are here: http://goo.gl/nR9rti

There are some video examples embedded in the video as well.…

I knew this script looked familiar, I just wrote the same script as I wrote almost a year ago. I guess I didn't do a good job getting it on the google's, cause I couldn't find it until I started posting about it...github:pass_to_shadow.py

Maybe this time I'll include some of the code in this post.


#!/usr/bin/python

# * Thu Jul 11 2013 Thomas Uphill
# - encrypt a password with sha512 by default
# - generate a crypt suitable for placement in /etc/shadow

import crypt
from random import randint
import string
import…

This has come up 3 times in the last few days so I thought I'd share it. The situation is that there are files at /var/spool/mqueue that are part of the /var filesystem. But there is also another filesystem mounted at /var/spool/mqueue with it's own files. You want to access the files under the mount but you can't. So, there are two ways around this (in this instance).

Option 1

Mount /var somewhere else, get the mount device for /var
[me@host ~] $ mount |grep "/var " |sed -e 's/\(.*\) on \/var type.*/\1/'
/dev/mapper/vg_root/lv_var
[me@host ~] $ sudo…