- Read every row in the table
- No reading of index. Reading from indexes is also expensive.
#!/bin/sh -e | |
SERVICE=$1 | |
SLEEP=${2:-0} | |
if [ -z "$SERVICE" ]; then | |
echo "Syntax: $0 service [sleep]" | |
exit | |
fi |
{ | |
"Version": "2008-10-17", | |
"Id": "0c762de8-f56b-488d-a4a4-20d1cb31df2f", | |
"Statement": [ | |
{ | |
"Sid": "Allow in my domains", | |
"Effect": "Allow", | |
"Principal": { | |
"AWS": "*" | |
}, |
[Unit] | |
Description=Demonstrate Bash | |
[Service] | |
ExecStartPre=/usr/bin/bash -c "/usr/bin/systemctl set-environment MYVAR=$(( 2 + 2 ))" | |
ExecStart=/usr/bin/echo "2 + 2 = ${MYVAR}" |
#!/bin/bash | |
instance_profile=`curl http://169.254.169.254/latest/meta-data/iam/security-credentials/` | |
aws_access_key_id=`curl http://169.254.169.254/latest/meta-data/iam/security-credentials/${instance_profile} | grep AccessKeyId | cut -d':' -f2 | sed 's/[^0-9A-Z]*//g'` | |
aws_secret_access_key=`curl http://169.254.169.254/latest/meta-data/iam/security-credentials/${instance_profile} | grep SecretAccessKey | cut -d':' -f2 | sed 's/[^0-9A-Za-z/+=]*//g'` | |
token=`curl -s http://169.254.169.254/latest/meta-data/iam/security-credentials/${instance_profile} | sed -n '/Token/{p;}' | cut -f4 -d'"'` | |
file="somefile.deb" | |
bucket="some-bucket-of-mine" | |
date="`date +'%a, %d %b %Y %H:%M:%S %z'`" |
#!/bin/bash | |
### USAGE | |
### | |
### ./ElasticSearch.sh 1.7 will install Elasticsearch 1.7 | |
### ./ElasticSearch.sh will fail because no version was specified (exit code 1) | |
### | |
### CLI options Contributed by @janpieper | |
### Check http://www.elasticsearch.org/download/ for latest version of ElasticSearch |
This tutorial walks through setting up AWS infrastructure for WordPress, starting at creating an AWS account. We'll manually provision a single EC2 instance (i.e an AWS virtual machine) to run WordPress using Nginx, PHP-FPM, and MySQL.
This tutorial assumes you're relatively comfortable on the command line and editing system configuration files. It is intended for folks who want a high-level of control and understanding of their infrastructure. It will take about half an hour if you don't Google away at some point.
If you experience any difficulties or have any feedback, leave a comment. 🐬
Coming soon: I'll write another tutorial on a high availability setup for WordPress on AWS, including load-balancing multiple application servers in an auto-scaling group and utilizing RDS.
by Bjørn Friese
Beautiful is better than ugly. Explicit is better than implicit.
I frequently deal with collections of things in the programs I write. Collections of droids, jedis, planets, lightsabers, starfighters, etc. When programming in Python, these collections of things are usually represented as lists, sets and dictionaries. Oftentimes, what I want to do with collections is to transform them in various ways. Comprehensions is a powerful syntax for doing just that. I use them extensively, and it's one of the things that keep me coming back to Python. Let me show you a few examples of the incredible usefulness of comprehensions.
# install openjdk | |
sudo apt-get install openjdk-7-jdk | |
# download android sdk | |
wget http://dl.google.com/android/android-sdk_r24.2-linux.tgz | |
tar -xvf android-sdk_r24.2-linux.tgz | |
cd android-sdk-linux/tools | |
# install all sdk packages |
CREATE TABLE accounts( | |
id serial PRIMARY KEY, | |
name VARCHAR(256) NOT NULL | |
); | |
CREATE TABLE entries( | |
id serial PRIMARY KEY, | |
description VARCHAR(1024) NOT NULL, | |
amount NUMERIC(20, 2) NOT NULL CHECK (amount > 0.0), | |
-- Every entry is a credit to one account... |