OSX Snow Leopard bootable backup script with FileVault support (backup will be unencrypted!)

rsync_backup

#!/bin/sh

PROG=$0
# use macports rsync 3.x - Apple's 2.6 hung on sockets 
RSYNC="/opt/local/bin/rsync"
SRC="/"
DST="/Volumes/Backup/"
FILEVAULT_ACCT="Users/yourusername"

# rsync options
# -v increase verbosity
# -a turns on archive mode (recursive copy + retain attributes)
# -x don't cross device boundaries (ignore mounted volumes)
# -E preserve executability
# -S handle spare files efficiently
# --delete delete deletes any files that have been deleted locally
# --exclude-from reference a list of files to exclude

if [ ! -r "$SRC" ]; then
 /usr/bin/logger -t $PROG "Source $SRC not readable - Cannot start the sync process"
 exit;
fi

if [ ! -w "$DST" ]; then
 /usr/bin/logger -t $PROG "Destination $DST not writeable - Cannot start the sync process"
 exit;
fi

/usr/bin/logger -t $PROG "Start rsync /"
sudo $RSYNC -vaxE -S -O --delete --exclude-from=/opt/backup/rsync_excludes.txt "$SRC" "$DST"
/usr/bin/logger -t $PROG "End rsync /"
/usr/bin/logger -t $PROG "Start rsync $FILEVAULT_ACCT"
# copy my FileVault acct (caution - unencrypted!) 
sudo $RSYNC -vaxE -S -O --delete --exclude-from=/opt/backup/rsync_excludes.txt "$SRC$FILEVAULT_ACCT/" "$DST$FILEVAULT_ACCT/"
/usr/bin/logger -t $PROG "End rsync $FILEVAULT_ACCT"

/usr/bin/logger -t $PROG "Normalizing $FILEVAULT_ACCT"
# tell the system on a backup drive that account is no longer FileVaulted
sudo dscl -f "$DST"/var/db/dslocal/nodes/Default / -delete "/Local/Target/$FILEVAULT_ACCT" HomeDirectory

# make the backup bootable
/usr/bin/logger -t $PROG "Blessing $DST"
sudo bless -folder "$DST"/System/Library/CoreServices

exit 0

rsync_excludes.txt

.Spotlight-*/
.Trashes
.fseventsd
/tmp/*
/Network/*
/cores/*
/afs/*
/automount/*
/private/tmp/*
/private/var/run/*
/private/var/spool/postfix/*
/private/var/vm/*
/Previous Systems.localized
/Volumes/*
*/.Trash
/Users/.yourusername