joseluisq

/** Representa una respuesta JSON satisfactoria */
interface ResponseOk<T = null> {
    success: true
    data: T
}

/** Representa una respuesta JSON errónea */
interface ResponseFail<T = null> {
    success: false
    code: string|number

joseluisq

/** Generate secure random string values in Javascript using cryto-random bytes */
function randomHash (len) {
    return Array.from(
        window.crypto.getRandomValues(new Uint8Array(Math.ceil(len / 2))),
        (b) => ("0" + (b & 0xFF).toString(16)).slice(-2)
    ).join("")
}

// Simple tests with various lengths

joseluisq

How to resize a qcow2 disk image on Linux

This example takes olddisk.qcow2 and resizes it into newdisk.qcow2, extending one of the guest's partitions to fill the extra space.

1. qcow2 format

1.1. Verify the filesystems of olddisk.qcow2

joseluisq

use futures::StreamExt;
use std::error::Error;
use tokio;
use tokio::macros::support::Pin;
use tokio::prelude::*;
use tokio::time::{Duration, Instant};

pub fn main() -> Result<(), Box<dyn std::error::Error>> {
    let mut multi_threaded_runtime = tokio::runtime::Builder::new()
        .threaded_scheduler()

joseluisq

/**
 * DISCLAIMER:
 * The only intention of this "scraper script" is to serving as a backup tool for YOUR own content on Quora.
 * Which means YOUR PUBLIC/PRIVATE content with YOU as author.
 * So use this script under Quora Policy and Term conditions. https://www.quora.com/about/tos_archive
 **/

/**
 * Dead simple Javascript browser scraper to backing up YOUR Quora content.
 * Feel free to customize it to your needs.

joseluisq

How to save space on disk removing ArchLinux Pacman packages cache

1. Check out how many space is taken by Pacman packages cache

ls /var/cache/pacman/pkg/ | wc -l
# 13886
du -sh /var/cache/pacman/pkg/
# 61G	/var/cache/pacman/pkg/

joseluisq

Renew GPG key

Given that your key has expired.

$ gpg --list-keys
$ gpg --edit-key KEYID

Use the expire command to set a new expire date:

joseluisq

export function slugify (text: string, separator = "-", ampersand = "and") {
    const a = "àáäâèéëêìíïîòóöôùúüûñçßÿỳýœæŕśńṕẃǵǹḿǘẍźḧ"
    const b = "aaaaeeeeiiiioooouuuuncsyyyoarsnpwgnmuxzh"
    const p = new RegExp(a.split("").join("|"), "g")

    return text.toString().toLowerCase()
        // Replace whitespaces and underscores with single hyphens
        .replace(/[\s_]+/g, separator)
        // Replace special chars
        .replace(p, (c) => b.charAt(a.indexOf(c)))

joseluisq

How to get just the name of first Docker service running

Following command will get just the name of the first Docker service running (usually the last one deployed) of a list of N services with running/shutdown/etc status.

Format name: service_name.N.ID

docker service ps my_service_name \
    --no-trunc --format="{{.Name}}.{{.ID}}/{{.DesiredState}}" | grep "Running" | cut -f1 -d "/" | head -n1
# my_service_name.1.abcd1v23ui456pyu7lx8k9fze

joseluisq

version: "3"
services:
  telegraf:
    image: telegraf:1.14-alpine
    environment:
      HOST_ETC: /hostfs/etc
      HOST_PROC: /hostfs/proc
      HOST_SYS: /hostfs/sys
      HOST_MOUNT_PREFIX: /hostfs
    volumes: