hugows

#!/bin/bash
# Script should be run daily to move Downloads/ files to an archived folder.

HOME="/home/hugo"
YESTERDAY=$(date -d "yesterday 13:00" '+%Y-%m-%d')
mkdir -p $HOME/ArchivedDownloads/$YESTERDAY
mv $HOME/Downloads/* $HOME/ArchivedDownloads/$YESTERDAY

hugows

package main

import (
	"fmt"
	"net/http"
	"time"
)

type server struct {
	conns int

hugows

#!/bin/bash

mkdir -p input/
rsync --remove-source-files -a pi@rpi:~/camera/ input/
ffmpeg -r 25 -pattern_type glob -i 'input/*.jpg' -c:v copy timelapse.avi

hugows

var mySchema = `{
	"$schema": "http://json-schema.org/draft-07/schema#",
  "type": "object",
  "properties": {
    "color": {
      "description": "The price of the product",
      "type": "string",
      "enum": ["blue", "red", "black"],
      "exclusiveMinimum": 0
    }

hugows

#!/usr/bin/env bash
# Original author: Ravi Teja Pothana (@RaviTezu)
# Hugo: removed stuff I didn't need on Linux
set -e

GO_VERSION="invalid"
GO_ROOT=/usr/local/go

function usage {
    printf "./update_go.sh <version> \n"

hugows

Mount your remote server to easily edit files with VSCODE

sudo mkdir /mnt/droplet
sudo sshfs -o allow_other root@xxx.xxx.xxx.xxx:/ /mnt/droplet

To unmount:

hugows

Helpful linux tips

Handy aliases I always type again:

alias sai='sudo apt install -y'
alias sas='sudo apt-cache search'
alias gc="git clone"
alias sshhugo="sshpass -p 'mypass' ssh myserver.com"
alias psqlacme="PGPASSWORD=acmepass psql -h localhost -U acme acmedb"

hugows

Quick setup Postgres 10 on Ubuntu 18.10

Paste this into your terminal, replacing acme with your project name:

PGUSER=acme
PGPASS=acmepass
PGDB=acmedb

sudo apt-get install postgres

hugows

On the emergence of interfaces

Interfaces naturally emerge as software gets broken down into parts communicating with one another. The larger and more deliberate structures emerge from a deliberate attempt to organize the development process itself. [fn:Liskov2008] Structure often emerge directly from division of labor: as teams take on independent tasks, interfaces are established betweeen domains they become responsible for. (Conway’s Law)

Software developers are responsible for systems built out of very small atoms while ultimately performing tasks for their users of a much greater magnitude. Dijkstra showed this by computing the ratio between grains of time at the lowest and largest atoms of the system (from say, CPU instructions to a human interaction with the system) The span was already quite large by Dijkstra’s time, of about 10^9. Today this ratio would be at least above 10^12 (see grain ratios)

This large span has to be manage

hugows

export function items(state = [], action) {
    switch (action.type) {
        case 'ITEMS_FETCH_DATA_SUCCESS':
            return action.items;
        default:
            return state;
    }
}