Swap two files on disk

swapfiles

#!/bin/bash

if [[ ! -e "$1" ]] || [[ ! -e "$2" ]]; then
	echo -e "Please specify files that exist:";
	echo -e "\tFor example: $0 fileOne fileTwo\n";
	exit 1;
fi

echo "Swapping Files: $1 $2";
mv "$1" ".tmp.$1";
mv "$2" "$1";
mv ".tmp.$1" "$2";