ankuagar

A few examples to peruse after reading Peter Bourgon's awesome tutorial, which walks you through the building of a backend service for a web app.

See also

• another example - a simple web server and client
• writing web apps - go's official tutorial
• recap of request handling - overview of go's request routing and response handling mechanics

ankuagar

package main

import (
	"encoding/json"
	"io/ioutil"
	"log"
	"net/http"
)

type Message struct {

ankuagar

# 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.

ankuagar

# import config.
# You can change the default config with `make cnf="config_special.env" build`
cnf ?= config.env
include $(cnf)
export $(shell sed 's/=.*//' $(cnf))

# import deploy config
# You can change the default deploy config with `make cnf="deploy_special.env" release`
dpl ?= deploy.env
include $(dpl)

ankuagar

From:  http://www.labnol.org/software/wget-command-examples/28750/

How do I download an entire website for offline viewing? How do I save all the MP3s from a website to a folder on my computer? How do I download files that are behind a login page? How do I build a mini-version of Google?

Wget is a free utility – available for Mac, Windows and Linux (included) – that can help you accomplish all this and more. What makes it different from most download managers is that wget can follow the HTML links on a web page and recursively download the files. It is the same tool that a soldier had used to download thousands of secret documents from the US army’s Intranet that were later published on the Wikileaks website.

You mirror an entire website with wget
Mirror an entire website with wget
Spider Websites with Wget – 20 Practical Examples

ankuagar

#!/usr/bin/env bash

CLUSTER_NAME="basicauth"
LOCATION="--zone us-central1-a"
#LOCATION="--region us-central1"

# Get cluster metadata
echo -n "Fetching cluster metadata..."
CLUSTER="$(gcloud container clusters describe ${CLUSTER_NAME} ${LOCATION} --format=json)"
echo "done."

ankuagar

K8s cluster

See logs of K8s cluster

https://kubernetes.io/docs/tasks/debug-application-cluster/debug-cluster/#looking-at-logs

show k8s api-server logging

sudo journalctl -u kube-apiserver --follow

see https://kubernetes.io/docs/reference/kubectl/cheatsheet/

ankuagar

Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

ankuagar

Here's the prime sieve of eratosthenes implemented in 4 different functional languages.

Which one's your favorite?

OCaml

let rec range s e = if s > e then [] else s :: range (s + 1) e;;

let countprimes n =
  let rec aux count = function

ankuagar

Here's the prime sieve of eratosthenes implemented in 4 different functional languages.

Which one's your favorite?

OCaml

let rec range s e = if s > e then [] else s :: range (s + 1) e;;

let countprimes n =
  let rec aux count = function