#!/bin/bash


# Check to make sure the user has entered exactly two arguments.
if [ $# -ne 2 ]
then
	echo "Usage backup.sh <source_directory> <target_directory>"
	echo "Please try again."
	exit 1
fi

# Check to see if rsync is installed
if ! command -v rsync > /dev/null 2>&1
then 
	echo "This script requires rsync to be installed."
	echo "Please use your distribution's package manager to install and try again."
	exit 2
fi

# Capture the current date and store it to the format YYYY-MM-DD
current_date=$(date +%Y-%m-%d_%H-%M-%S)

rsync_options="-avb --backup-dir $2/$current_date --delete "

$(which rsync) $rsync_options $1 $2/current >> backup_$current_date.log