Rsync for snapshot

snapshot.sh

#!/bin/bash

# Basic snapshot-style rsync backup script 
# Taken from https://wiki.archlinux.org/index.php/Rsync#Snapshot_backup

# Config
## archive, show progress, in human readable sizes
OPT="-aPh"
LINK="--link-dest=/snapshots/username/last/" 
SRC="/home/username/"
SNAP="/snapshots/username/"
LAST="/snapshots/username/last"
date=`date "+%Y-%b-%d:_%T"`
EXCLUDE="--exclude='rsync-exclude.txt' --exclude-from 'rsync-exclude.txt'"

# Run rsync to create snapshot
rsync $OPT $LINK $EXCLUDE $SRC ${SNAP}$date

# Remove symlink to previous snapshot
rm -f $LAST

# Create new symlink to latest snapshot for the next backup to hardlink
ln -s ${SNAP}$date $LAST