craigphicks

#!/usr/bin/env python3

import argparse
import textwrap
import subprocess
import os
import datetime
#import pdb
#import random
import time

craigphicks

Setting up a pipes between A and B

A to B (setup on A)

From A, set up a pipe for sending data from A to B

a@A: ssh -v -N -L 2223:127.0.0.1:2222 b@B

To test it, first open a listener on B

craigphicks

1. downloaded (https://downloads.openwrt.org/snapshots/targets/brcm2708/bcm2710/openwrt-brcm2708-bcm2710-rpi-3-ext4-factory.img.gz) and set up SD card

2. modify /etc/network to set ip address, gateway, dns

config interface 'lan'
	option type 'bridge'
	option ifname 'eth0'

craigphicks

#!/usr/bin/env python2  
#coding=utf-8
#  
# Openwrt Package Grabber  
#  
# Copyright (C) 2014 http://www.shuyz.com
# modified 2019 craigphicks
#     

import urllib2 

craigphicks

#!/bin/bash
#
#
#<UDF name="ssuser" Label="Sudo user username?" example="username" />
#<UDF name="sspassword" Label="Sudo user password?" example="strongPassword" />
#<UDF name="sspubkey" Label="SSH pubkey (installed for root and sudo user)?" example="ssh-rsa ..." />


# initial needfuls
apt-get -o Acquire::ForceIPv4=true update

craigphicks

Forwarding X11 over ssh without using xauth

• local -- the local machine serving an Xserver.
• remote -- the remote machine serving the application which drives the data going to the Xserver

Remote /etc/ssh/sshd_config:

X11Forwarding no
X11DisplayOffset 10
X11UseLocalhost yes

craigphicks

x=10;
function test(){
  var x=20;
  var obj = {x:30};
  function logargs(t,arg1,arg2,arg3,arg4) { 
    console.log(`(${t}) this.x=${this.x},x=${x},obj.x=${obj.x},${arg1},${arg2},${arg3},${arg4.x}`); 
  }
  logargs("A",this.x,x,obj.x,obj);
 setTimeout(logargs,0,"B",this.x,x,obj.x,obj);

craigphicks

function showDeep(t){
    let o=t
    do {
      console.log(`--- ${o.constructor.name}`)
      for (let k of Reflect.ownKeys(o)) {
        let d = Reflect.getOwnPropertyDescriptor(o,k)
        if (JSON.stringify(d.value)!==undefined) {
          console.log(`${k} : ${JSON.stringify(d.value)}`)
          if (k==='stack')
            console.log("") // funky

craigphicks

A singleton makes sense when it prevent multiple access to a resource than must not be accessed in that way. But sometimes a singleton design is used because it is sufficient for expected usage. But that may block expanded usage unecessarily.

ES6 dynamic import can import a singelton module into a closure allowing a singleton to become a non-singleton class. See the file yargs-class.mjs below.

The result of test-yargs0class.mjs -

argv[0]= {

craigphicks

function makeNonCryptoRandomAlphaNumString(length) {
  function tf(n) {
    if (n < 26) return 65 + n
    else if (n < 52) return 97 + n - 26
    else return 48 + n - 52
  }
  var result = ''
  for (var i = 0; i < length; i++) {
    let idx = Math.floor(Math.random() * 62)
    result += String.fromCharCode(tf(idx))