jdavis

import socket


def find_open_port():
    """
    Use socket's built in ability to find an open port.

    """
    sock = socket.socket()
    sock.bind(('', 0))

fgassert

#!/bin/bash

# gets iam security credentials from instance metadata and writes them to
# awscli environment variables and .s3cfg (for s3cmd)

# Usage: ec2-get-security-credentials ROLENAME DEFAULT_REGION
# ROLE=$1
# DEFAULT_REGION=$2

davidsneal

<!-- I got these buttons from simplesharebuttons.com -->
<div id="share-buttons">
    
    <!-- Buffer -->
    <a href="https://bufferapp.com/add?url=https://simplesharebuttons.com&amp;text=Simple Share Buttons" target="_blank">
        <img src="https://simplesharebuttons.com/images/somacro/buffer.png" alt="Buffer" />
    </a>
    
    <!-- Digg -->
    <a href="http://www.digg.com/submit?url=https://simplesharebuttons.com" target="_blank">

greyli

# -*- coding: utf-8 -*-
import os
import uuid

from flask import Flask, render_template, redirect, url_for, request
from flask_uploads import UploadSet, configure_uploads, IMAGES, patch_request_class
from flask_wtf import FlaskForm
from flask_wtf.file import FileField, FileRequired, FileAllowed
from wtforms import SubmitField

gene1wood

import boto3

def role_arn_to_session(**args):
    """
    Usage :
        session = role_arn_to_session(
            RoleArn='arn:aws:iam::012345678901:role/example-role',
            RoleSessionName='ExampleSessionName')
        client = session.client('sqs')
    """

mosquito

Docker compose as a systemd unit

Create file /etc/systemd/system/docker-compose@.service. SystemD calling binaries using an absolute path. In my case is prefixed by /usr/local/bin, you should use paths specific for your environment.

[Unit]
Description=%i service with docker compose
PartOf=docker.service
After=docker.service

mgaspari

#!/usr/bin/ruby

#usage:   youtube-to-mp3 <youtube-url>
#example: youtube-to-mp3 http://www.youtube.com/playlist?list=PL398CE05652474A1E
#desc:    downloads a single youtube vid or a playlist, then converts to mp3.
#         Requires youtube-dl and ffmpeg

url = ARGV[0]
system("youtube-dl -citA #{url}") 

crypticmind

About

Example on how to run locally an AWS Lambda via API Gateway using localstack.

Based on...

1. https://stackoverflow.com/questions/44547574/create-api-gateway-in-localstack/48682628
2. https://ig.nore.me/2016/03/setting-up-lambda-and-a-gateway-through-the-cli/

Usage

DaisukeMiyamoto

import boto3
from boto3.session import Session


def assume_role(arn, session_name):
    """aws sts assume-role --role-arn arn:aws:iam::00000000000000:role/example-role --role-session-name example-role"""

    client = boto3.client('sts')
    account_id = client.get_caller_identity()["Account"]
    print(account_id)

npearce

UPDATE (March 2020, thanks @ic): I don't know the exact AMI version but yum install docker now works on the latest Amazon Linux 2. The instructions below may still be relevant depending on the vintage AMI you are using.

Amazon changed the install in Linux 2. One no-longer using 'yum' See: https://aws.amazon.com/amazon-linux-2/release-notes/

Docker CE Install

sudo amazon-linux-extras install docker
sudo service docker start