Just as the name implies, a very basic backup script. Uses Rsync to back up a Mac user's home directory to a folder named backup at the location of the script file. Depends on the $HOME environment variable being set.

VeryBasicBackup.command

#!/bin/bash

SOURCE="${BASH_SOURCE[0]}"
while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink
  DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
  SOURCE="$(readlink "$SOURCE")"
  [[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE" # if $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located
done
DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"

DIR="${DIR}/backup"

while :
do
	echo -e "\033[39mThis script will back up:\033[0m"
	echo ""
	echo -e "\033[33m****************************************************************\033[0m"
	echo -e "\033[34m	${HOME}\033[0m"
	echo -e "\tto"
	echo -e "\033[34m	$DIR"
	echo -e "\033[33m****************************************************************\033[0m"
	echo ""
	read -s -n1 -p "Is this correct? (press y/n)" key
	case $key in
		y)
		echo ""
		echo ""
		echo -e "\033[31m****************************************************************\033[0m"
		echo "You will receive several prompts asking to give Terminal"
		echo "access to files and data, you MUST approve these or"
		echo "the backup will not complete properly."
		echo -e "\033[31m****************************************************************\033[0m"
		sleep 2
		echo ""
		read -n1 -r -p "Press any key to begin..."
		echo ""
		echo ""
		echo "Starting backup, this may take a while..."
		echo ""
		mkdir -p "${DIR}"
		rsync --archive --verbose --exclude ".Trash" --exclude "Library/Application Support/SyncServices" --exclude "Library/Caches" --exclude "Library/Logs"  --exclude "Library/Preferences/com.apple.mail-shared.plist" --exclude "Library/Preferences/com.apple.homed.plist" --exclude "Library/Preferences/com.apple.homed.notbackedup.plist" --exclude "Library/Cookies" --exclude "Library/Metadata" --exclude "Library/PersonalizationPortrait" --exclude "Library/Containers" --exclude "Library/Autosave Information" --exclude "Library/IdentityServices" --exclude "Library/Messages" --exclude "Library/HomeKit" --exclude "Library/Sharing" --exclude "Library/Mail" --exclude "Library/Accounts" --exclude "Library/Safari" --exclude "Library/Suggestions" --exclude "Library/Application Support/CallHistoryTransactions" --exclude "Library/Application Support/CloudDocs" --exclude "Library/Application Support/com.apple.sharedfilelist" --exclude "Library/Application Support/Knowledge" --exclude "Library/Application Support/com.apple.TCC" --exclude "Library/Application Support/FileProvider" --exclude "Library/Application Support/com.apple.avfoundation" --exclude "Library/Application Support/CallHistoryDB" "$HOME" "$DIR"
		echo ""
		echo "Done! You can run this again to backup any updated files. Only updated files will be backed up so the backup should be considerably quicker."
		exit 0
		;;
		n)
		echo ""
		echo "Exiting..."
		exit 0
		;;
		*)
		echo ""
		echo "You need to pick Yes or No"
		continue
		;;
	esac
done