A script to diff files/directories on two different servers

Ok, short one today. This is a straightforward script that simplifies comparing directories on different servers. There is no magic in it, it just rsyncs the directories to a local temp directory and runs diff against them (then deletes the directory afterwards). Mainly intended for config files, I wouldn’t recommend trying to diff gigabytes of binaries with it.

#!/bin/bash 

set -o nounset

if [[ -z ${1:-} || -z ${2:-} || -z ${3:-} ]] ; then
	echo "Usage: ${0##*/} <file|directory> <server1> <server2>"
	echo
	echo "e.g. ./${0##*/} '/etc/pam.d/' 10.0.0.1 10.0.0.2"
	echo
	exit 0
fi

Dir="${1}"
IP1="${2}"
IP2="${3}"

tmpdir=$(mktemp -d)
trap 'rm -rf "${tmpdir}"' INT TERM EXIT

for ip in ${IP1} ${IP2}
do
	rsync -az "${ip}:${Dir}" "${tmpdir}/${ip}"
done
diff -BZEburN "${tmpdir}/${IP1}" "${tmpdir}/${IP2}" | colordiff --difftype=diffu

#!/bin/bash

set -o nounset

if [[ -z ${1:-} || -z ${2:-} || -z ${3:-} ]] ; then

echo "Usage: ${0##*/} <file|directory> <server1> <server2>"

echo

echo "e.g. ./${0##*/} '/etc/pam.d/' 10.0.0.1 10.0.0.2"

echo

exit 0

Dir="${1}"

IP1="${2}"

IP2="${3}"

tmpdir=$(mktemp -d)

trap 'rm -rf "${tmpdir}"' INT TERM EXIT

for ip in ${IP1} ${IP2}

rsync -az "${ip}:${Dir}" "${tmpdir}/${ip}"

done

diff -BZEburN "${tmpdir}/${IP1}" "${tmpdir}/${IP2}" | colordiff --difftype=diffu