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#!/bin/bash -ex
#

# Copies certain kinds of known files and directories from a given Jenkins master directory
# into a git repo, removing any old ones, adds 'em, commits 'em, pushes 'em.
#
if [ $# -ne 2 ]; then
  echo usage: $0 jenkins_root_dir jenkins_master
  exit 1
fi

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#!/bin/bash
export PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin

### Thanks Xream's Work XD

# if you don't have several vpn servers to select, you can comment following line 
# and use your openvpn config file name to replace "${host}.ovpn" in while loop.

read -p "Select the host: " host

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    <pluginManagement>
      <plugins>
        <!-- 
        The RPM plugin is used to create distributable apps from our war file. 
        To use it fire:
        $ mvn install rpm:rpm
        ...
        The resulting rpm is then found at Project/target/rpm/Project/RPMS/noarch/Project-versoin-1.noarch.rpm

        For example: ImageServer/target/rpm/ImageServer/RPMS/noarch/ImageServer-6.5.0-1.noarch.rpm

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# This is how you add a Jenkins slave

# On master, create ssh keys for the Jenkins user if you don't have one. 
# We will use ssh-key auth for master connections towards the slave.

  sudo -u jenkins -H ssh-keygen

# On slave.
# Create a jenkins user account
# Create a system directory and use that for jenkins' user home directory

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# This is how you add a Jenkins slave

# On master:

  sudo -u jenkins -H ssh-keygen

# On slave

  adduser --system --group --home=/var/lib/jenkins-slave --no-create-home --disabled-password --quiet --shell /bin/bash jenkins-slave
  install -d -o jenkins-slave -g jenkins-slave /var/lib/jenkins-slave

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# to generate your dhparam.pem file, run in the terminal
openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048

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set :application, "My Static Content"
set :servername, 'test.example.com'

# no git? simply deploy a directory
set :scm, :none
set :repository,  "." # the directory to deploy

# using git? deploy from local git repository
# set :scm, :git
# set :repository, 'file//.' # path to local git repository

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#!/usr/bin/python

import multiprocessing, os, re, sys, time

cgroup_dir = '/sys/fs/cgroup'
node_rgx = u'[a-z]*[0-9]{2}'
interval = 1 

def main():
  cpus = multiprocessing.cpu_count()

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Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs