3 # Perform incremental backups using rsync and hardlinks.
5 # Thanks to http://www.sanitarium.net/golug/rsync_backups_2010.html for the
8 # Copyright (C) 2011-2013 Simon Ruderich
10 # This program is free software: you can redistribute it and/or modify
11 # it under the terms of the GNU General Public License as published by
12 # the Free Software Foundation, either version 3 of the License, or
13 # (at your option) any later version.
15 # This program is distributed in the hope that it will be useful,
16 # but WITHOUT ANY WARRANTY; without even the implied warranty of
17 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 # GNU General Public License for more details.
20 # You should have received a copy of the GNU General Public License
21 # along with this program. If not, see <http://www.gnu.org/licenses/>.
26 if test "$#" -lt 2; then
27 echo "Usage: $0 <backups-directory> <arguments to rsync>" >&2
29 echo "Note: The target directory is the _first_ argument!" >&2
38 if test "x$dest" != 'xbackup-*'; then
39 # -F and grep is used to list only directories, zsh's *(/) would be great.
40 dest="`pwd`/`ls -1dF backup-* | grep / | tail -n1`"
43 target=backup-`date '+%Y-%m-%d-%H-%M-%S'`
45 if test -d current; then
46 echo "Target directory 'current' already exists, aborting." >&2
52 --verbose --itemize-changes --human-readable \
53 --archive --hard-links --numeric-ids --one-file-system \
56 && mv current "$target"