samof76

#!/bin/sh
# From - http://www.codingsteps.com/install-redis-2-6-on-amazon-ec2-linux-ami-or-centos/
# 
# redis - this script starts and stops the redis-server daemon
# Originally from - https://raw.github.com/gist/257849/9f1e627e0b7dbe68882fa2b7bdb1b2b263522004/redis-server
#
# chkconfig:   - 85 15 
# description:  Redis is a persistent key-value database
# processname: redis-server
# config:      /etc/redis/redis.conf

samof76

port 26379
sentinel monitor mymaster 172.31.20.201 6379 1
sentinel down-after-milliseconds mymaster 10000
sentinel failover-timeout mymaster 20000
sentinel parallel-syncs mymaster 1
bind 0.0.0.0
dir "/tmp"
loglevel notice
logfile "/var/log/redis-sentinel.log"
daemonize yes

samof76

#!/bin/bash
set -e

function install_haproxy () {
  echo "Install dependencies..."
  sudo yum install wget git gcc pcre-static pcre-devel -y

  echo "Download haproxy..."
  pushd /tmp
  wget http://www.haproxy.org/download/1.6/src/haproxy-1.6.3.tar.gz

samof76

#!/bin/bash

/etc/init.d/monit stop
/etc/init.d/opsworks-agent stop
rm -rf /etc/aws/opsworks/ /opt/aws/opsworks/ /var/log/aws/opsworks/ /var/lib/aws/opsworks/ /etc/monit.d/opsworks-agent.monitrc /etc/monit/conf.d/opsworks-agent.monitrc /var/lib/cloud/ /etc/chef

rpm -e opsworks-agent-ruby
rpm -e chef

/etc/init.d/nginx stop

samof76

#!/bin/bash

/etc/init.d/monit stop
/etc/init.d/opsworks-agent stop
rm -rf /etc/aws/opsworks/ /opt/aws/opsworks/ /var/log/aws/opsworks/ /var/lib/aws/opsworks/ /etc/monit.d/opsworks-agent.monitrc /etc/monit/conf.d/opsworks-agent.monitrc /var/lib/cloud/ /etc/chef

rpm -e opsworks-agent-ruby
# rpm -e chef

# /etc/init.d/nginx stop

samof76

#!/bin/bash
set -x

pushd /tmp
  wget https://github.com/sribalakumar/bootchart/archive/master.zip
  unzip master.zip
  pushd bootchart-master
    sh install.sh
    sed -i 's/default=1/default=0/g' /boot/grub/menu.lst
  popd

samof76

defmodule Math do
  def fib(n) when n == 1, do: [0]
  def fib(n) when n > 1, do: fib([0], n-1)
  def fib([0], n), do: fib([1|[0]], n-1)
  def fib(l,0), do: Enum.reverse(l)
  def fib(l,n) do
    [h1|[h2 | _]] = l
    fib([h1+h2 | l], n-1)
  end                                     
end

samof76

iex --name sam --cookie secret
2018-08-17 12:39:22.425266 
    args: []
    format: "Can't set long node name!\nPlease check your configuration\n"
    label: {error_logger,info_msg}
2018-08-17 12:39:22.425344 crash_report        #{label=>{proc_lib,crash},report=>[[{initial_call,{net_kernel,init,['Argument__1']}},{pid,<0.59.0>},{registered_name,[]},{error_info,{exit,{error,badarg},[{gen_server,init_it,6,[{file,"gen_server.erl"},{line,358}]},{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,249}]}]}},{ancestors,[net_sup,kernel_sup,<0.45.0>]},{message_queue_len,0},{messages,[]},{links,[<0.56.0>]},{dictionary,[{longnames,true}]},{trap_exit,true},{status,running},{heap_size,610},{stack_size,27},{reductions,833}],[]]}
2018-08-17 12:39:22.425812 supervisor_report   #{label=>{supervisor,start_error},report=>[{supervisor,{local,net_sup}},{errorContext,start_error},{reason,{'EXIT',nodistribution}},{offender,[{pid,undefined},{id,net_kernel},{mfargs,{net_kernel,start_link,[[sam,longnames],true]}},{restart_type,per

samof76

defmodule TestStreams do
  def lines_lengths!(path) do
    File.stream!(path)
    |> Stream.map(&String.replace(&1, "\n",""))
    |> Enum.map(&String.length(&1))
  end

  def longest_line_length!(path) do
    File.stream!(path)
    |> Stream.map(&String.replace(&1, "\n", ""))

samof76

defmodule DatabaseServer do
    # start/0 is the fuction of the Databaserver
    # that starts the server process by spawning
    # loop/0 and returns its PID.
    def start do
        spawn(&loop/0)
    end

    # loop/0 is the fuction of the DatabaseServer
    # that that basically waits to `receive` messages