Linux Training

#!/bin/ksh
# $Id: ftchbkup,v 1.58 2015/03/21 13:30:13 fulford Exp $
# $Source: /src/merlin/usr/local/etc/RCS/ftchbkup,v $
# $Revision: 1.58 $
# Author C W Fulford.
# Copyright 2013 (c) C W Fulford. 
# Licensed for public use under the LGPL.
# For assistance contact fulford@fulford.net 0709 229 5385
#########################################################################
cmd=`basename $0`
syntax="$cmd [-c <config>] [-d(debug)] [-l] [-v(erbose)] <host_name>"
while [ $# -gt 0 ] ;do
	case $1 in 
		-c) config=$2;shift 2;;
		-d) debug=1;set -x;shift;;
		-l) log=:;shift;;
		-v) verbose=:;shift;;
		*) host=$1;shift ;;
	esac
done
[ -z "$host" ]&& { echo $syntax >&2 ;exit;}
arcls=/tmp/arc-$host-$$
config=${config:-"/usr/local/etc/ftchbkup.cf"}
tmp=/tmp/$cmd.$$
if [ $verbose ];then
	sed -ne "/^$host:$/,/^$/{
		/^[	 ][^#]*=[:alpha:]*/p
	}" $config
fi
eval `sed -ne "/^$host:$/,/^$/{
	/^[	 ][^#]*=[:alpha:]*/p
}" $config` 
max=${max:-3} # Age in days after which archives deleted.
mtime=${mtime:-"-1"} # Time archive created
store=${store:-/backup/$host}
[ -z "$files" ]&&{ echo "$cmd: file list not found in $config" >&2; exit 1 ;}

for f in $files ;do
	f=`echo $f|sed -e 's/\*/\\\*/g'`
	ssh $host "cd $basedir
		   sudo find ./ -name $f -mtime $mtime -print" >>$arcls
done

sudo [ -w $store ] || { echo "$cmd: can't write to $store, retrying in 2" >&2
		  sleep 2
		  sudo [ -w $store ] ||{
			echo "$cmd: can't write to $store. Terminating" >&2
		  	exit 1 
		  }
}
[ -d $store ] && cd $store

cat $arcls|sed -e 's/^\.\///'|
while read a ;do
	[ "$verbose" ] && echo "$cmd: fetching $a"
	arcdir=`dirname $a`
	[ ! -d  $arcdir ] && sudo mkdir -p $arcdir
	if ssh $host "sudo dd if="$basedir"/$a 2>/dev/null" |
		sudo dd of=$a 2>/dev/null;then
			[ "$log" ] && logger -t $cmd-$host "$a complete"
			[ "$verbose" ] && echo "$cmd: deleting older archives"
			find  ./$arcdir -mtime $max -exec sudo rm {} \;
	else
		[ "$log" ] && logger -t $cmd-$host "$a failed" 
	fi
done
[ "$verbose" ] && echo "removing $arcls"
rm $arcls
######################################################################
# This program is free software: you can redistribute it and or      #
# modify it under the terms of the Lesser GNU General Public License #
# as published by the Free Software Foundation, either version 3 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.                       #
#                                                                    # 
# A copy of the Lesser GNU General Public License and the GNU        #
# General Public License is available at                             #
# <http://www.gnu.org/licenses/>.                                    #
######################################################################