Obtain the path of the script and the way in which he was called (has not been tested yet, it is just to study)

current-path.sh

#!/usr/bin/env bash

SCRIPT_PATH=$(realpath "$0")
CALLING_FROM=$(pwd)

if [ -d "$CALLING_FROM" ]; then
    CALLING_DIR=$CALLING_FROM
else
    CALLING_DIR=$(dirname "$CALLING_FROM")
fi

DIR_PATH=$(dirname $SCRIPT_PATH)

echo "-----------------------------------------------"

echo "\$0:                   $0"

echo "Real script path:     $SCRIPT_PATH"

echo "Real dir path:        $DIR_PATH"

echo "Calling from:         $CALLING_FROM"

echo "Calling from dir:     $CALLING_DIR"

echo "-----------------------------------------------"

read -rsp $'Press any key to continue...\n' -n 1 key