yarapavan

Vagrant.configure("2") do |config|
          config.vm.box = "demo"
  config.vm.provider :aws do |aws,override|
        aws.access_key_id = "xxxxxxxxxxxxxxxxxxxxx"
    aws.secret_access_key = "xxxxxxxxxxxxxxxxxxxxx"
    aws.keypair_name = "euca33-key"
    aws.ami = "emi-C9A43A41"
        override.ssh.username ="root"
        override.ssh.private_key_path ="/user/credentials/euca33-key.private"
    aws.security_groups = ["default"]

yarapavan

===ESCAPE CHARACTERS===

When a pseudo-terminal has been requested, ssh supports a number of func‐
tions through the use of an escape character.

A single tilde character can be sent as ~~ or by following the tilde by a
character other than those described below. The escape character must
always follow a newline to be interpreted as special. The escape charac‐
ter can be changed in configuration files using the EscapeChar configura‐
tion directive or on the command line by the -e option.

yarapavan

FROM ubuntu
MAINTAINER Pavan Yara "yarapavan@gmail.com"

RUN echo "deb http://us.archive.ubuntu.com/ubuntu/ precise universe" >> /etc/apt/sources.list
RUN apt-get update
RUN apt-get install -y python-setuptools python-pip python-numpy python-scipy python-matplotlib python-pandas python-sympy python-nose
RUN pip install ipython jinja2 pyzmq readline tornado requests

RUN apt-get install -y openssh-server supervisor
ADD sshd.conf /etc/supervisor/conf.d/sshd.conf

yarapavan

on Ubuntu 12.04 32-bit OS 
      LC_ALL="en_US.UTF-8" jekyll serve
'
Latest GSL
sudo gem install --conservative --no-ri --no-rdoc gsl

yarapavan

Extract html links:

      lynx -dump -listonly html.htm
      grep -oP "(?<=src=\")[^\"]+(?=\")" test.txtgrep -oP "(?<=src=\")[^\"]+(?=\")" html.txt
      awk -F\" '{print $(NF-1)}' html.txt

Fix Mac CLI permission errors (Insecure world writable dir /usr/local in PATH, mode 040777):
  1. Disk utility > repair disk permissions
  2. chmod -R o-w /usr/local/

yarapavan

Internet Scale Services Checklist

A checklist for designing and developing internet scale services, inspired by James Hamilton's 2007 paper "On Desgining and Deploying Internet-Scale Services."

• http://mvdirona.com/jrh/talksandpapers/jamesrh_lisa.pdf

Basic tenets

• Does the design expect failures to happen regularly and handle them gracefully?
• Have we kept things as simple as possible?

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$ more asg.sh

#!/bin/sh
apt-get update
apt-get -y install python-setuptools python-pip ec2-api-tools
pip install awscli
pip install aws-ec2-assign-elastic-ip

aws-ec2-assign-elastic-ip --region us-west-1 >> /var/log/aws-ec2-assign-elastic-ip.log

yarapavan

https://www.keycdn.com/blog/web-development-tools/

yarapavan

// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

yarapavan

Business Models

Advertising

Models	Examples
Display ads	Yahoo!
Search ads	Google