Shell Skript: Cyrus Backup Script V4

###########################################################################
##                                                                       ##
##                        Cyrus Backup Script V4                         ##
##                                                                       ##
## Creation:    16.06.2005                                               ##
## Last Update: 20.10.2013                                               ##
##                                                                       ##
## Copyright (c) 2004-2013 by Georg Kainzbauer <http://www.gtkdb.de>     ##
##                                                                       ##
## This program is free software; you can redistribute it and/or modify  ##
## it under the terms of the GNU General Public License as published by  ##
## the Free Software Foundation; either version 2 of the License, or     ##
## (at your option) any later version.                                   ##
##                                                                       ##
###########################################################################
#!/bin/bash

# Location of the backup directory
BACKUPDIR=/data/backup/cyrus/

# Name of the backup archive
BACKUPFILE=cyrus_backup_`date +%Y_%m_%d_%H_%M`.tar.bz2

# Path of the Cyrus spool and account directory
SPOOLDIR=/var/spool/imap
ACCOUNTINGDIR=/var/lib/imap/user

# Log file
LOGFILE=/var/log/cyrus_backup.log

# Lock file
LOCK=/var/tmp/cyrus_backup.lock

###################################################################
# NORMALLY THERE IS NO NEED TO CHANGE ANYTHING BELOW THIS COMMENT #
###################################################################

function log()
  {
    echo `date +%d.%m.%Y%t%H:%M:%S` "    LOG:" $1 | tee -a ${LOGFILE}
  }

function error()
  {
    echo `date +%d.%m.%Y%t%H:%M:%S` "    ERROR:" $1 | tee -a ${LOGFILE}
    exit 1
  }

if [ -f ${LOCK} ] ; then
  error "Lockfile ${LOCK} exists."
fi

touch ${LOCK}

if [ ! -d ${BACKUPDIR} ] ; then
  log "Creating backup directory"
  mkdir -p ${BACKUPDIR}
fi

log "Suspending mail system"
echo "Server Suspended ..." > /var/lib/imap/msg/shutdown

log "Starting backup process"
umask 066
su - cyrus -c "/usr/lib/cyrus-imapd/ctl_mboxlist -d" > /var/tmp/mailboxlist.txt
tar cjpf ${BACKUPDIR}${BACKUPFILE} ${SPOOLDIR} ${ACCOUNTINGDIR} /var/tmp/mailboxlist.txt
rm -f /var/tmp/mailboxlist.txt

log "Resuming mail system"
rm -f /var/lib/imap/msg/shutdown
postqueue -f

rm -f ${LOCK}

exit 0