#!/bin/bash

# transform.sh

# show some string transformations with various tools

# tr

VAR="+\"1AbCd2EFGH3ijk~=9"
VAR="!O Hallo Anwender?"

echo $VAR | tr [:alnum:] Y
echo $VAR | tr [a-zA-Z] [A-Za-z]
echo $VAR | tr [:lower:] [:upper:]