hh-lohmann

Understanding Command-Line Arguments: Flags, Options, and Beyond

Disclaimer: ChatGPT generated document.

When working with command-line programs, one of the first concepts you encounter is the idea of passing inputs directly to a program at launch. These inputs control behavior, configure execution, or provide data. While many developers casually refer to all such inputs as “flags,” the reality is more nuanced.

This article provides a clear, structured understanding of what these inputs are actually called, how they are categorized, and why the distinctions matter—especially for developers building robust CLI tools.

hh-lohmann

The 23 Gang of Four Design Patterns (Cheat Sheet)

• The 23 Gang of Four Design Patterns (Cheat Sheet)
  • Abstract Factory
  • Adapter
  • Bridge
  • Builder
  • Chain of Responsibility
• Command

hh-lohmann

{
  "title": "Takeout API",
  "discoveryVersion": "v1",
  "ownerName": "Google",
  "version_module": true,
  "resources": {
    "exports": {
      "methods": {
        "get": {
          "flatPath": "v2/{service}/exports/{exportId}",

hh-lohmann

<?php
function randomPassword( $len = 8, $ucfirst = false, $spchar = false ){
	/* Programmed by Christian Haensel
	 * christian@chftp.com
	 * http://www.chftp.com
	 *
	 * Exclusively published on weberdev.com.
	 * If you like my scripts, please let me know or link to me.
	 * You may copy, redistribute, change and alter my scripts as
	 * long as this information remains intact.

hh-lohmann

#!/bin/bash
#
# Get basic info about audio / video file (MP4, MP3, WAV, WEBM, ...) by ffprobe
#   - Usually you should have ffmpeg on your system, including ffprobe
#   - ffprobe gives you MUCH MUCH (MUCH) information
#   - this little helper script reduces ffprobe's info hell to typical core information
#     - use this script as a template for personal information interests 
#       - don't get mislead by "-v error" - it means "don't get verbose WITHOUT errors"
#   - information is given as JSON for readability & easy automated consumptione

hh-lohmann

#!/usr/bin/env bash

# https://gist.github.com/BobbyRyterski/7a511b96ece47655b17d
# based on http://stackoverflow.com/q/14471692

readonly BASE62=($(echo {0..9} {a..z} {A..Z}))

base62_encode() {
  local out=
  for i in $(bc <<< "obase=62; $1"); do

hh-lohmann

MsgBox "here i am again ..."

hh-lohmann

 '
 ' function getMacAddressForIpRange
 '
 ' Returns the MAC address of the current computer for a given internet (IP) connection, i.e. that of the network adapter with which an IP address out of a given range of IP addresses is connected. The restriction to an IP address range avoids to wrongly retrieve virtual adapters like VirtualBox. Note that technically only the first matching MAC address is returned, assuming that only one connection to the same net exists per machine.
 '
 ' !! May not work in virtual machines.
 '
 ' @license     GPL 2 (http://www.gnu.org/licenses/gpl.html)
 ' @author      hh.lohmann <hh.lohmann@yahoo.de>
 ' @version     2014-02-26 10:15