DavidPesticcio

#!/bin/bash 
 
# Default Variable Declarations 
DEFAULT="Default.txt" 
FILEEXT=".ovpn" 
CRT=".crt" 
KEY=".3des.key" 
CA="ca.crt" 
TA="ta.key" 
 

DavidPesticcio

---
# ^^^ YAML documents must begin with the document separator "---"
#
#### Example docblock, I like to put a descriptive comment at the top of my 
#### playbooks.
#
# Overview: Playbook to bootstrap a new host for configuration management.
# Applies to: production
# Description: 
#   Ensures that a host is configured for management with Ansible.

DavidPesticcio

#!/bin/bash

echo "Before scan:"
dmesg | awk '/scsi/ && /Direct-Access/'

for i in $(ls -d /sys/class/scsi_host/*); do echo "- - -" > $i/scan; done

echo "After scan:"
dmesg | awk '/scsi/ && /Direct-Access/'

DavidPesticcio

Get boot2docker working with nfs instead of vboxsf.

Tested on:

- Boot2Docker-cli version: v1.6.0
  Git commit: 9894ae9
- Boot2Docker-cli version: v1.6.2
  Git commit: cb2c3bc

DavidPesticcio

Find GNU grep results quicker with a bit of colour!

http://www.arwin.net/tech/bash.php
https://linuxaria.com/pills/coloring-grep-to-easier-research

Add this to your shell customisations file with your choice of colours:

export GREP_OPTIONS='--color=auto'
export GREP_COLOR='1;31;44'

DavidPesticcio

Transforming Code into Beautiful, Idiomatic Python

Notes from Raymond Hettinger's talk at pycon US 2013 video, slides.

The code examples and direct quotes are all from Raymond's talk. I've reproduced them here for my own edification and the hopes that others will find them as handy as I have!

Looping over a range of numbers

for i in [0, 1, 2, 3, 4, 5]:

DavidPesticcio

Find all files between a start-date, and an end-date:

( touch -t $(date --date='6 months ago' +%Y%m%d"0000") /tmp/start && touch -t $(date --date='5 months ago' +%Y%m%d"0000") /tmp/stop ) && find . -newer /tmp/start \! -newer /tmp/stop -exec ls -l {} \; | less


Some Bash variables tricks:
$ set quick brown fox jumps

$ echo ${*: -1:1} # last argument
jumps

DavidPesticcio

---------- mailtalk.txt ----------
helo myhost
mail from: [email protected]
rcpt to: [email protected]
data
FROM: [email protected]
TO: [email protected]
SUBJECT: This is a Test mail
blah blah
.