Simple backup script

backup.sh

#!/bin/bash

# don't do anything
DRYRUN=0

# add trailing slash
BACKUPDIR="/backup/files/"

# generate final bzipped tarball, uses pbzip2
TARBALL=/backup/backup.tar.bz2

# encrypt xzipped tarball
[email protected]

## DO NOT EDIT BELOW THIS LINE ##
declare -A DIRS
DIRS[logs]="${BACKUPDIR}/logs/"
DIRS[databases]="${BACKUPDIR}/databases/"

for DIR in ${DIRS[@]}; do mkdir -v -p "${DIR}"; done

TIMESTAMP=$(date -Is)

declare -A DATES
function log() {
	echo "[$(date -Is)] $@"
}
function tic() { DATES[${1:-default}]=$(date +%s); }
function toc() { echo "$(($(date +%s) - DATES[${1:-default}]))"; }

log "Started"
tic

echo $TIMESTAMP > "${BACKUPDIR}/timestamp"

## Files
log "{files} Started"
tic files
rsync -avR $((( $DRYRUN )) && printf -- -n) --delete \
	/srv \
	/var/lib/mysql \
	/var/log \
	/var/mail \
	/etc \
	/home \
\
	"${BACKUPDIR}/root/" | gzip > "${DIRS[logs]}/${TIMESTAMP}_rsync.log.gz"
log "{files} Finished in $(toc files) seconds"

## Databases
DATABASES=(mydatabase)
log "{database} Started"
tic db
for DB in ${DATABASES[@]}; do
	log "{database} Dumping ${DB}"
	(( $DRYRUN )) || {
		cd /
		umask 277
		(sudo -u postgres -H pg_dump "${DB}") > "${DIRS[databases]}/${DB}.sql"
	}
done
log "{database} Finished in $(toc db) seconds"

if [[ $TARBALL ]]; then
	log "{tarball} Started"
	tic tarball
	tar cf "${TARBALL}" "${BACKUPDIR}" --use-compress-program=pbzip2
	log "{tarball} Compressed backup size is $(du -h ${TARBALL} | cut -f 1)"
	log "{tarball} Finished in $(toc tarball) seconds"
	
	if [[ $GPG_RECIPIENT ]]; then
		log "{encrypt} Started"
		tic encrypt
		gpg --encrypt --recipient "${GPG_RECIPIENT}" "${TARBALL}"
		log "{encrypt} Finished in $(toc encrypt) seconds"
		rm "${TARBALL}"
	fi

fi

log "Finished in $(toc) seconds"
log "Backup size is $(du -sh ${BACKUPDIR} | cut -f 1)"