Rename U2 torrent in Git Bash (Windows)

rename_torrent.sh

#!/bin/bash
OLDIFS="$IFS"
IFS=$'\n'
PATH='/c/Program Files/Transmission':$PATH
for i in $(ls \[U2\].*.torrent); do
		torrent_name=$(transmission-show $i | grep -Po "(?<=^Name: ).+$")
		echo "Torrent name: $torrent_name"
		torrent_id=$(echo $i | grep -Po "(?<=\.)\d+(?=\.torrent)")
		echo "Torrent ID: $torrent_id"
		new_name="[U2].$torrent_name.$torrent_id.torrent"
		echo "Original name: $i"
		echo "New name: $new_name"
		mv "$i" "$new_name"
done