dir-replacer.sh

#!/bin/bash

####################################################################################
##                                                                                ##
##   Directory Replacer                                                           ##
##                                                                                ##
##   Description: Initially made with the intention of moving                     ##
##   Umbrel apps to an external drive.                                            ##
##                                                                                ##
##   Usage: ./dir-replacer.sh folder1 folder2 ... dest                            ##
##                                                                                ##
##   Authors: Guilherme Araujo aka Gartisk                                        ##
##            https://github.com/gartisk                                          ##
##                                                                                ##
##   Version: 0.1                                                                 ##
##   Last Update: February 17, 2023                                               ##
##                                                                                ##
##   Github easy alternative:                                                     ##
##   https://github.com/new/import                                                ##
##                                                                                ##
####################################################################################

howto="Usage: $0 folder1 folder2 ... destination"
# Check if at least two arguments are provided
if [ "$#" -lt 2 ]; then
    echo "$howto"
    exit 1
fi

# Get the last argument, which is the destination folder
while [[ $# -gt 1 ]]; do
    case $1 in
        -d)
            dest="$2"
            shift 2
            ;;
        *)
            original_folders+=("$1")
            shift
            ;;
    esac
done


# Get the complete path of the destination folder

# Check if the destination directory is provided
if [ -z "$dest" ]; then
    echo "Destination directory is required."
    echo "$howto"
    exit 1
fi

dest=$(realpath "$dest")
# Check if the destination folder exists
if [ ! -d "$dest" ]; then
    echo "Destination folder '$dest' does not exist."
    echo "Creating  '$dest' folder."

    cmd_mkdir="mkdir -p \"$dest\""
    echo "$cmd_mkdir"

    eval "${cmd_mkdir}"
fi

#original_folders=("${@:1:$#-1}")

# Move each folder to the destination folder
for ((i = 0; i < ${#original_folders[@]}; i++)); do
    origem_folder="${original_folders[i]}"

    echo "Move and Link Directory $origem_folder"

    if [ ! -d "$origem_folder" ]; then
        echo "Folder '$origem_folder' not found"
        continue
    fi

    origem_basename=("$(basename "$origem_folder")")
    origem_newpath="$dest/$origem_basename"
    origem_realname=("$(realpath "$origem_basename")")

    cmd_move="mv \"$origem_realname\" \"$origem_newpath\""
    echo "$cmd_move"
    eval "${cmd_move}"

    cmd_link="ln -s \"$origem_newpath\" \"$origem_realname\""
    echo "$cmd_link"
    eval "${cmd_link}"

    echo ""

done

echo "Done"

To Execute Directly:
curl -sSL https://gist.githubusercontent.com/gartisk/69a50964c458916c32ba9cb168f43005/raw/48f197c3455a9586d630047245eb874a16c76d22/dir-replacer.sh | bash -s folder1 folder2 ... -d dest
or
wget -qO- https://gist.githubusercontent.com/gartisk/69a50964c458916c32ba9cb168f43005/raw/48f197c3455a9586d630047245eb874a16c76d22/dir-replacer.sh | bash -s folder1 folder2 ... -d dest