Local incremental backup of Windows' drives with RSync via Cygwin.

backup.sh

#!/bin/sh

#Local incremental backup of Windows' drives with RSync via Cygwin.

#Run like ./backup.sh cat_pictures_drive d g
#where d is the drive containing cat pictures
#and g is the destination of the backup.
#Backups will be made on g like G:\cat_pictures_drive_backup\backup-YY-MM...

#high-level description of the content we're backing up
#e.g. music
#e.g. photos
content=$1

#lower case drive letter of source data to back up
#e.g. c
srcdrv=$2

#lower case drive letter of destination where backup will be stored
#e.g. f
destdrv=$3

#exclude the files listed line-by-line in this file
excl=/cygdrive/d/Tasks/excludes.txt

#source dir to backup
#use trailing slash!
src=/cygdrive/"$2"/

#destination dir to store backup
dest=/cygdrive/"$3"/"$1"_backup

#log file
log=/cygdrive/"$3"/"$1"_backup.log

#a current timestamp, formatted as you'd like
#keep the units sorted, i.e. year-month-day-hour...
date=`date "+%F-%H-%M-%S.%N"`

rsync --archive --human-readable --delete --ignore-errors --itemize-changes --whole-file --exclude-from=$excl --numeric-ids --link-dest=$dest/current $src $dest/backup-$date 2>&1 | tee $log

rm -f $dest/current

ln -s $dest/backup-$date $dest/current