guumaster

#!/bin/bash
if [[ -p /dev/stdin ]]
then
    echo "stdin is coming from a pipe"
fi
if [[ -t 0 ]]
then
    echo "stdin is coming from the terminal"
fi
if [[ ! -t 0 && ! -p /dev/stdin ]]

guumaster

#!/bin/bash
unset password
prompt="Secret Password:"
while IFS= read -p "$prompt" -r -s -n 1 char
do
    if [[ $char == $'\0' ]]
    then
        break
    fi
    #prompt='*' # to show * for every keystroke

guumaster

1. Install zerofree program:

sudo apt-get install zerofree

2. Reboot Ubuntu.

3. Press <Shift> to enter grub menu.

4. From grub menu select "recovery mode".

guumaster

sudo dpkg --get-selections > /tmp/dpkglist.txt

guumaster

function format(str) {
  var args = [].slice.call(arguments);
  str = args.shift();
 
  return str.replace(/%(\d+)/g,
      function(match, i) {
    return args[--i];
  });
}
 

guumaster

[color]
    ui = auto
[color "branch"]
    current = yellow reverse
    local = yellow
    remote = green
[color "diff"]
    meta = yellow bold
    frag = magenta bold
    old = red bold

guumaster

import RPi.GPIO as GPIO
if GPIO.RPI_REVISION == 1:
    ports = [0, 1, 21]
else:
    ports = [2, 3, 27]
print "Your Pi is a Revision %s, so your ports are: %s" % (GPIO.RPI_REVISION, ports)

guumaster

Upload a file with $.ajax to AWS S3 with a pre-signed url

When you read about how to create and consume a pre-signed url on this guide, everything is really easy. You get your Postman and it works like a charm in the first run.

Then you open your browser, try your usual $.ajax() and send your PUT operation, and you hit the cold iced wall of AWS error message, a simple <Code>SignatureDoesNotMatch</Code> that will steal hours from your productivity.

So here I come to save you and give you a free working example of how to upload a file directly to AWS S3 from your browser. You are wellcome :).

guumaster

'use strict';

let convert = (str) => {
  return str
    .trim()
    .split(/ +/)
    .reduce((acc, word) => {
      return (acc + ' ' + word[0].toUpperCase() +  word.slice(1).toLowerCase()).trim();
  }, '');
}

guumaster

'use strict';

let convert = require('./convert');
let freq = require('./frequency');
let input = process.argv[2] || 'EMPTY';

console.log( freq(convert(input)));