[Cygwin] Duplicity - Restore

#!/bin/bash
clear
ulimit -n 1024

# Restores Duplicity backups via Cygwin.
#------------------------------------------------------------------------------
# Set the source, destination, GPG key ID, the restore time and a temporary mount-point.
BACKUP=file://$(cygpath "J:\dest")
DUMP=$(cygpath "$SYSTEMDRIVE\dump")
WIN_DUMP=$(cygpath -w "$DUMP")
KEY=012EE35A
RT=2016-02-18T20:33:53
T_MP=/tmp/dump/
#------------------------------------------------------------------------------
# Is Duplicity installed?
if !(cygcheck -cd duplicity | grep -q duplicity)
then
    echo "Please install the 'Duplicity' package for Cygwin."
    exit 1
fi
#------------------------------------------------------------------------------
# Does the destination exist?
if [ -d "$DUMP" ]
then
    echo "Destination already exists. I refuse to destroy your pretty data flowers."
    exit 1
else
    mkdir "$DUMP"
fi
#------------------------------------------------------------------------------
# Prepare permissions.
setfacl -b "$DUMP"
#------------------------------------------------------------------------------
# Create a temporary mount-point without POSIX permissions.
if [ -d "$T_MP" ]
then
    rm -rf "$T_MP"
fi
mkdir $T_MP
mount -o binary,posix=0,user,noacl $WIN_DUMP $T_MP
#------------------------------------------------------------------------------
# The passphrase you set during the GPG key creation.
export PASSPHRASE=qZSt3rigV0wDW9t43BtpAQC066F
export SIGN_PASSPHRASE=$PASSPHRASE
#------------------------------------------------------------------------------
# Restore.
duplicity --encrypt-key=$KEY --sign-key=$KEY --restore-time "$RT" "$BACKUP" "$T_MP"
#------------------------------------------------------------------------------
# Clear the variables.
unset SIGN_PASSPHRASE
unset PASSPHRASE
unset WIN_DUMP
unset BACKUP
unset DUMP
unset KEY
unset RT
#------------------------------------------------------------------------------
# End.
echo "Finished!"
umount $T_MP
unset T_MP
exit 0
#------------------------------------------------------------------------------
# Information.
#duplicity collection-status "$BACKUP"
#duplicity list-current-files "$BACKUP" | grep "test.txt"