naartjie

# One liner
wget --recursive --page-requisites --adjust-extension --span-hosts --convert-links --restrict-file-names=windows --domains yoursite.com --no-parent yoursite.com

# Explained
wget \
     --recursive \ # Download the whole site.
     --page-requisites \ # Get all assets/elements (CSS/JS/images).
     --adjust-extension \ # Save files with .html on the end.
     --span-hosts \ # Include necessary assets from offsite as well.
     --convert-links \ # Update links to still work in the static version.

naartjie

<configuration>
  <appender name="STDERR" class="ch.qos.logback.core.ConsoleAppender">
    <target>System.err</target>
    <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
      <level>WARN</level>
    </filter>
    <encoder>
        <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
    </encoder>
  </appender>

naartjie

Stop all containers:

• docker ps -aq | xargs docker stop

Remove all containers:

• docker ps -aq | xargs docker rm

Remove all images:

• docker images -aq | xargs docker rmi

Remove all networks:

naartjie

Here are several different ways to test a TCP port without telnet.

BASH (man page)

$ cat < /dev/tcp/127.0.0.1/22
SSH-2.0-OpenSSH_5.3
^C

$ cat &lt; /dev/tcp/127.0.0.1/23

naartjie

-- Create a group
CREATE ROLE readaccess;

-- Grant access to existing tables
GRANT USAGE ON SCHEMA public TO readaccess;
GRANT SELECT ON ALL TABLES IN SCHEMA public TO readaccess;

-- Grant access to future tables
ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT SELECT ON TABLES TO readaccess;

naartjie

// Option A:
const React = require('react');

const counterState = React.createState();
const counterReducer = (action, state) => {
  switch (action) {
    case "INCREMENT": {
      return React.updateState({counter: state.counter + 1});
    }
  }

naartjie

(defn arg-find
  "Helper function for defroute that extracts code from the body and
  organizes it as bindings, symbols and body. Function calls within
  the body are replaced by their corresponding gensyms. (:symbols is
  just a list of the gensyms in :bindings, for convenience)"
  [body]
  (reduce (fn [acc [k v]]
            (if (list? v)
              (let [sym (gensym (str (name k) "-"))]

naartjie

async function walk (dir, visitor) {
  const filenames = await fs.readdirAsync(dir)

  await* filenames
    .map(filename => path.join(dir, filename))
    .map(async filename => {
      const stat = await fs.statAsync(filename)
      if (stat.isDirectory()) {
        await walk(filename, visitor)
      } else {

naartjie

{
  "curly": true,
  "eqeqeq": true,
  "bitwise": true,
  "camelcase": true,
  "expr": true,
  "esnext": true,
  "forin": true,
  "freeze": true,
  "immed": true,

naartjie

getters = (cls, getters) ->
  cls.__base.__index = (key) =>
    if getter = getters[key]
      getter @
    else
      cls.__base[key]

setters = (cls, setters) ->
  cls.__base.__newindex = (key, val) =>
    if setter = setters[key]