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How to install No-IP on Raspberry Pi

This Gist will guide you on how to install the No-IP DUC (Dynamic Upadate client) on a RaspberryPi and to automatically start it on boot. For this I am going to use a RaspberryPi 4B 2GB, but I have already done the same on a RaspberryPi 3B. I am going to use Raspberry Pi OS.

As a prerequisite you should register on https://no-ip.com and create the host entry that will be used later with your Pi.

First thing is to open a Terminal and create a directory to work with during the installation.

mkdir noip

	make_symlinks() {
	log_info "This needs to be run as administrator for symlinking to work in git-bash"
	log_info "Creating symlinks..."
	# cygpath converts posix <-> win paths
	local home_win=$(cygpath -aw "$HOME")
	local repo_win=$(cygpath -aw ./)

	# make sure ~/bin & ~/hooks exists
	mkdir ~/bin ~/hooks >/dev/null 2>&1

	#!/bin/bash

	URL="https://wttr.in/"
	URLv2="https://v2.wttr.in/"
	URLv3="https://v3.wttr.in/"

	Help()
	{
	echo -e "
	Write 'wttr {your+city+name}' to check the weather condition of your city.

	#!/usr/bin/env bash
	# simple wrapper function around http://wttr.io to get sensible defaults
	# easily modified by changing the defaults and/or last parameters in the url

	function wttr() {
	USAGE="
	Usage: wttr [OPTIONS]

	Options:
	-c <city> city name, double words with +, eg. new+york

	#! /usr/bin/env bash
	set -e

	oldBranch="master"
	newBranch="main"

	# {{{ Colors, logging boilerplate
	readonly PROG_NAME="$0"

	function RESET { echo -e "\e[0m"; }

	#!/bin/bash

	declare -a MODES
	MODES=("b" "d" "g" "p" "s" "t" "w" "y")

	declare -a COWS
	COWS=("tableflip" "aperture-blank" "beavis.zen" "bees" "biohazard" "box" "broken-heart" "cat" "cat2" "clippy" "cowfee" "cube" "default" "dragon" "hedgehog" "kilroy" "kosh" "nyan" "owl" "psychiatrichelp" "psychiatrichelp2" "shrug" "squirrel" "tux")

	MODES_LENGTH=${#MODES[@]}
	MODES_INDEX=$(($RANDOM % $MODES_LENGTH))

	export PS1='\[\e[1;33m\]\u\[\e[1;37m\]@\[\e[1;32m\]\h\[\e[1;37m\]: \[\e[1;31m\]\w\[\e[0;36m\]$(__git_ps1 "\e[37m (\e[36m%s ⎇ \e[37m)\e[0m")\n\[\e[1;36m\]└─\$ ▶ \[\e[0m\]'

	# if you don't have __git_ps1 (git-prompt.sh) , you can download it from here https://github.com/git/git/blob/master/contrib/completion/git-prompt.sh , and source it in your bash init files (ie. .bashrc)

	#!/bin/bash
	# echo "" > /usr/bin/dynmotd; chmod +x /usr/bin/dynmotd; nano /usr/bin/dynmotd

	USER=`whoami`
	MEMORY1=`free -t -m \| grep "buffers/cache" \| awk '{print $3" MB";}'`
	MEMORY2=`free -t -m \| grep "Mem" \| awk '{print $2" MB";}'`

	# time of day
	HOUR=$(date +"%H")
	if [ $HOUR -lt 12 -a $HOUR -ge 0 ]; then

	# TV Online : https://www.vidio.com/live

	useradd -mg sudo -s `which bash` ariss -c "Aris Ripandi" -p `openssl passwd -1 ripandi`
	chsh -s `which bash` root ; chsh -s `which bash` ariss ; perl -pi -e 's#(.sudo.ALL=)(.*)#${1}(ALL) NOPASSWD:ALL#' /etc/sudoers

	apt install axel htop whois binutils dnsutils zip unzip unrar tar p7zip nscd lsof \
	crudini openssl openssh-server openssh-client curl screenfetch screen elinks nano

	touch /usr/bin/duckdns ; chmod +x /usr/bin/duckdns
	cat > /usr/bin/duckdns <<EOF

	#!/bin/bash

	printf "%s" "$(</tmp/wttr)"