#!/bin/bash

# A script to 'swap' two file names

set -euo pipefail

if [[ $# -ne 2 ]];
then
        echo "Two arguments required: File1 File2"
        exit 1;
fi

echo -n "Swapping $1, $2"
temp=$(mktemp)

mv "$1" "$temp"
mv "$2" "$1"
mv "$temp" "$2"
echo ": DONE"