maclarensg

# add this in ur bashrc script

switch_ssh(){
  envs=()
  for file in $(find  ~/.ssh -name "id_rsa.pub.*" -printf "%f\n"); do
    runtime=$( echo $file | awk -F '.' '{print $NF}' )
    envs+=( $runtime )
  done

  i=0

maclarensg

Signal	Value	Action	Comment
SIGHUP	1	Term	Hangup detected on controlling terminal or death of controlling process
SIGINT	2	Term	Interrupt from keyboard
SIGQUIT	3	Core	Quit from keyboard
SIGILL	4	Core	Illegal Instruction
SIGABRT	6	Core	Abort signal from abort(3)
SIGFPE	8	Core	Floating point exception
SIGKILL	9	Term	Kill signal
SIGSEGV	11	Core	Invalid memory reference
SIGPIPE	13	Term	Broken pipe: write to pipe with no readers

maclarensg

AT Commands RisingHF

Use serial set at 9600 baud rate, does not display INPUT is normal

Appkey 2B7E151628AED2A6ABF7158809CF4F3C

10.16.101.47

Commands

maclarensg

LVM

Prepare the new disk

Create partition on deisk

# fdisk /dev/sdb 

Command (m for help): p

maclarensg

Epoch

Current Epoch Time

echo $(($(date +'%s * 1000 + %-N / 1000000')))

Set Epoch time

echo $(($(date --date="Sep 17 00:00:00 SGT 2018" +'%s * 1000 + %-N / 1000000')))

maclarensg

module Hooks
  @@before_methods = []
  @@after_methods = []
  def before(*method_names, **actions)
    # create a Module for preprend to exisitng class
    to_prepend = Module.new do
      method_names.each do |method|
        @@before_methods << method
        define_method(method) do |*args, &block|
          send(actions[:do]) if @@before_methods.include? method

maclarensg

Guide to integrate mdbootstrap to rails5

Preparing a railsapp

1. Create a new rails app

rails new MyNewApp --skip-active-record

2. Add to Gemfile the with the following Gems:

gem 'mongoid', '~> 6.0'