Compares the content of two directories.

dir_diff.sh

#!/bin/sh
# ==============================================================================
# name:         dir_diff.sh
# description:  Compares the content of two directories.
# author:       Lennart Braun <lenerd@posteo.de>
# license:      MIT
# date:         20150501
# version:      0.1
# requirements: sha1sum
# usage:        sh dir_diff.sh dir1 dir2
# ==============================================================================
# The MIT License (MIT)
# 
# Copyright (c) 2015 Lennart Braun <lenerd@posteo.de>
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# ==============================================================================

path1="${1%/}/"
path2="${2%/}/"
t1=$(mktemp)
t2=$(mktemp)

find $path1 -print0 | while IFS= read -r -d $'\0' line; do
    sha1sum "$line" 2>&1 | sed -e "s!$path1!!" >> $t1
done

find $path2 -print0 | while IFS= read -r -d $'\0' line; do
    sha1sum "$line" 2>&1 | sed -e "s!$path2!!" >> $t2
done

diff $t1 $t2

rm $t1
rm $t2