IngmarBoddington

CONNECT
DELETE
GET
HEAD
OPTIONS
PATCH
POST 
PUT
TRACE

IngmarBoddington

#Front Controller rewrite
RewriteEngine on
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^.*$ index.php [L,NC]

# Ensure we are using HTTPS
RewriteCond %{HTTPS} !on
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

IngmarBoddington

git add . [-A]
	- Recursively add all modified files to staging area
	  -A - Include removed files

git blame
  - Show last modigified timestamp / author for each line of a file

git branch [-a] [-r] [-m] [-d] [-D] [<branch-name>]
  - Lists local branches, give name to create branch
  - Flags:git 

IngmarBoddington

TERMINOLOGY
-----------
Images - The file system and configuration of our application which are used to create containers
	Dockerfile describes an image
	Image identifiers can be repo:tag or ID
Containers - Running instances of Docker images — containers run the actual applications. A container includes an application and all of its dependencies. It shares the kernel with other containers, and runs as an isolated process in user space on the host OS. You created a container using docker run which you did using the alpine image that you downloaded. A list of running containers can be seen using the docker ps command.
	Image ID != Container ID
	When containers are recreated they will have lost any changes made since last created
Docker daemon - The background service running on the host that manages building, running and distributing Docker containers.
Docker client - The command line tool that allows the user to interact with the Docker daemon.

IngmarBoddington

sed -n '<int>,<int>p' <file>
  - Grab contents of file between lines (inclusive)

sed [-n] '/<regex>/<command>' <inputfile> [> <outputfile>]
    - Fine lines with text in inputfile and optionally put in outputfile
    - -n makes command silent
    - use !d or p (with -n) to show only matched lines

sed 's/<regex>/<replace>/' <inputfile> [> <outputfile>]
    - Replaces matches text in infile and optionally put in outputfile

IngmarBoddington

-. = Any Single character
-+ = One or more of preceding character
-? = Zero or one of preceding character
-* = One or more of preceding character
-^ = Start of string
-$ = End of string
-| = or
-(Escape any of above with \, for literal \ use \\)
-{n} = n of preceding character
-{n,} = At least n of preceding character

IngmarBoddington

Basics
======

Expansion (special symbols replaced by values) and word splitting (arguments being split into several aruments) must have attemtion paid or pain will follow.

- # for comments

- Lots of internal variables available to bash scripts, see: http://tldp.org/LDP/abs/html/internalvariables.html#ARGLIST
    - Name of script will be $0
    - Parameters passed to script will be in $1, $2, $3.... vars and count in $#

IngmarBoddington

Ansible pushes IT Infra / Config from a control node using SSH
Commands are parallelised between hosts
Ordering can be important, watch out for deadlocks
Ansible is written in Python

=====
Inventory File

- Lives at /etc/ansible/hosts by default
- Can be flat file

IngmarBoddington

Enable tracing example:

zend_extension="/usr/lib/php5/20090626+lfs/xdebug.so"
xdebug.auto_trace=1
xdebug.trace_output_dir="/tmp/xdebug/"
xdebug.collect_params=4
xdebug.collect_return=1
xdebug.trace_options=1
xdebug.show_local_vars=1

IngmarBoddington

AFGHANISTAN,AF
ALBANIA,AL
ALGERIA,DZ
AMERICAN SAMOA,AS
ANDORRA,AD
ANGOLA,AO
ANGUILLA,AI
ANTARCTICA,AQ
ANTIGUA AND BARBUDA,AG
ARGENTINA,AR