Sie wollen Ihre E-Mails sichern. Hier ein primitiver Vorschlag.

*/30 * 1 * * /home/<username>/Mail/backup/backup.sh

#!/bin/bash
# backup.sh - Backups your e-mails.
# Copyright (C) Son Nov 25 19:15:35 MET 2001 - now by Ingo Blechschmidt
#
#  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.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software
#  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
# Ingo Blechschmidt
# Arberstraße 5
# 86179 Augsburg
# E-Mail: iblech@web.de, http://www.way.to/uselinux/
# Tel.: +49 / 821 882955
#
# 

[ -e ~/Mail/backup/l ] || > ~/Mail/backup/l

if [ ! "`cat ~/Mail/backup/l`" = "`date +%d`" ]; then
  tar --preserve --create --bzip2 --verbose --verbose --file ~/Mail/backup/`date +%d.%m.%Y`.tar.bz2 --exclude=backup --remove-files ~/Mail
  date +%d > ~/Mail/backup/l
fi