fabiolimace

package your.package.name;

import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.UUID;

/**
 * A UUID generator that creates hash-based or name-based UUIDs (MD5 and SHA-1).
 *

fabiolimace

package your.package.name;

import java.security.SecureRandom;
import java.util.Random;
import java.util.UUID;

/**
 * A UUID generator that creates random-based UUIDs (UUIDv4)
 *
 * RFC-4122 compliant.

fabiolimace

package your.package.name;

import java.security.SecureRandom;
import java.util.Random;
import java.util.UUID;

/**
 * A UUID generator that creates COMB UUIDs.
 * 
 * The COMB UUIDs combine the creation time and random bytes.

fabiolimace

package your.package.name;

/**
 * Utility class that replaces chars of a String, aka, transliterate.
 * 
 * It's equivalent to bash 'tr' and perl 'tr///'.
 *
 * @author: Fabio Lima 2020
 */
public class ReplaceChars {

fabiolimace

package your.package.name;

/**
 * Utility class that removes chars from a String.
 * 
 * @author: Fabio Lima 2020
 */
public class RemoveChars {

	public static String remove(String string, String remove) {

fabiolimace

package com.example;

/**
 * Utility class for left pad, right pad, center pad and zero fill.
 * 
 * @author Fabio Lima 2020-2021
 */
public final class StringPadding {

	public static String left(String string, int length, char fill) {

fabiolimace

#!/bin/bash
#
# Calculate uniqueness of hostname hashes using SHA256 algorithm
#

# hostname-0001, hostname-0002, hostname-0003...
HOSTNAME_BASE="hostname";

# % of unique hashes for 256 host names: 0.65625000000000000000
USED_NODES=256;         # used nodes

fabiolimace

#!/bin/bash
#
# Fix Wifi of Intel Z83 mini PC on Ubuntu 20.04
#
# Download these files in the same folder:
# - brcmfmac43455-sdio.txt
# - brcmfmac43455-sdio.clm_blob.base64 
#
# Source: 
# https://github.com/Linwood-F/MusicalPi/wiki/Intel-Z83-mini-PC-setup-(still-MusicalPi)

fabiolimace

package your.package.name;

import java.security.SecureRandom;
import java.util.HashSet;
import java.util.Random;
import java.util.Set;
import java.util.UUID;

/**
 * A UUID generator that creates time-based and time-ordered UUIDs.

fabiolimace

# Check file encoding
file -i INPUT_FILE.TXT
INPUT_FILE.TXT: text/plain; charset=utf-8

# Convert from UTF-8 to ISO-8859-1 with transliteration and ignoring invalid characters
iconv -f utf-8 -t iso-8859-1//TRANSLIT -c  -o OUTPUT_FILE.TXT INPUT_FILE.TXT