This resource is meant for those learning Python as a first language. It's a small collection of resources which start at beginner and moves to more intermediate concepts.
This gist assumes you are on a Mac. It also assumes that you already have Python and pip installed and that you are most likely using Python version 2.7.x. If your environment differs you may have to work a little harder to get things sorted but hopefully the gist of the gist (agile Python) will still be useful for you. If you are on a windows machine, this is probably not the gist you are looking for.
We will take the minimum amount of steps nessessary to set up a complete set of tools that are fully controllable from the command line. Use your text editor or IDE of choice for creating the spec and implementation files. Note that some IDEs (i.e. PyCharm) make some of what we cover below a lot easier (i.e. debugging) but it is probably still useful to understand what is going on behind the scenes.
We will create a simple application that pulls down Guido van Rossum's twitter feed and prints out some of his latest perls of wisdo
# Single line comments start with a number symbol.
""" Multiline strings can be written
using three "s, and are often used
as comments
"""
####################################################
| tail -n 0 -f log.txt | grep --line-buffered 'ERROR' | while read line; do afplay beep-01a.wav; done | |
| #log.txt this is the log file you want to tail. Full path if not in that directory | |
| #'ERROR' is the stirng you are looking to match | |
| #beep-01a.wav is the sound to play when string matched. Full path if not in that directory | |
| #Maik later responded saying his logfile was on a remote server, he discovered the following worked to tail a remote file | |
| ssh <user@remoteserver> tail -n 0 -f log.txt | grep --line-buffered 'ERROR' | while read line; do afplay beep-01a.wav; done |
| # to generate your dhparam.pem file, run in the terminal | |
| openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048 |
I've been using a lot of Ansible lately and while almost everything has been great, finding a clean way to implement ansible-vault wasn't immediately apparent.
What I decided on was the following: put your secret information into a vars file, reference that vars file from your task, and encrypt the whole vars file using ansible-vault encrypt.
Let's use an example: You're writing an Ansible role and want to encrypt the spoiler for the movie Aliens.
| #!/bin/bash | |
| # xvfb - this script starts and stops Xvfb | |
| # | |
| # chkconfig: 345 95 50 | |
| # description: Starts xvfb on display 99 | |
| # processname: Xvfb | |
| # pidfile: /var/log/xvfb/xvfb.pid | |
| # Source function library. |