cdist/other/examples/remote/rsync/copy

#!/bin/sh
#
# 2012 Matt Coddington (mcoddington at gmail.com)
# 2012 Steven Armstrong (steven-cdist at armstrong.cc)
#
# This file is part of cdist.
#
# cdist 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 3 of the License, or
# (at your option) any later version.
#
# cdist 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 cdist. If not, see <http://www.gnu.org/licenses/>.
#
#
# Use rsync over ssh to copy files.  This particular invocation of
# rsync makes a backup of the file before overwriting it.  For example,
# if cdist overwrites /etc/passwd then you'll end up with the old copy
# at /etc/passwd~cdist.
#
# Usage:
#  cdist config --remote-copy /path/to/this/script target_host
#

# For rsync to do the right thing, the source has to end with "/" if it is
# a directory. The below preprocessor loop takes care of that.

# second last argument is the source
source_index=$(($#-1))
index=0
for arg in $@; do
   if [ $index -eq 0 ]; then
      # reset $@
      set --
   fi
   index=$((index+=1))
   if [ $index -eq $source_index -a -d "$arg" ]; then
      arg="${arg%/}/"
   fi
   set -- "$@" "$arg"
done

rsync --backup --suffix=~cdist -e 'ssh -o User=root' $@