denishpatel/autopgsqlbackup

## autopgsqlbackup
#!/bin/bash
#
# PostgreSQL Backup Script Ver 1.0
# http://autopgsqlbackup.frozenpc.net
# Copyright (c) 2005 Aaron Axelsen <axelseaa@amadmax.com>
#
# This script is based of the AutoMySQLBackup Script Ver 2.2
# It can be found at http://sourceforge.net/projects/automysqlbackup/
#
# The PostgreSQL changes are based on a patch agaisnt AutoMySQLBackup 1.9
# created by Friedrich Lobenstock <fl@fl.priv.at>
#
# 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
#=====================================================================
# Set the following variables to your system needs
# (Detailed instructions below variables)
#=====================================================================

# Username to access the PostgreSQL server e.g. dbuser
USERNAME=postgres

# Password
# create a file $HOME/.pgpass containing a line like this
#   hostname:*:*:dbuser:dbpass
# replace hostname with the value of DBHOST and postgres with
# the value of USERNAME

# Host name (or IP address) of PostgreSQL server e.g localhost
DBHOST=localhost

# List of DBNAMES for Daily/Weekly Backup e.g. "DB1 DB2 DB3"
DBNAMES="all"

# Backup directory location e.g /backups
BACKUPDIR="/var/backups/postgres"

# Mail setup
# What would you like to be mailed to you?
# - log   : send only log file
# - files : send log file and sql files as attachments (see docs)
# - stdout : will simply output the log to the screen if run manually.
MAILCONTENT="log"

# Set the maximum allowed email size in k. (4000 = approx 5MB email [see docs])
MAXATTSIZE="4000"

# Email Address to send mail to? (user@domain.com)
MAILADDR="root@localhost"


# ============================================================
# === ADVANCED OPTIONS ( Read the doc's below for details )===
#=============================================================

# List of DBBNAMES for Monthly Backups.
MDBNAMES="template1 $DBNAMES"

# List of DBNAMES to EXLUCDE if DBNAMES are set to all (must be in " quotes)
DBEXCLUDE=""

# Include CREATE DATABASE in backup?
CREATE_DATABASE=yes

# Separate backup directory and file for each DB? (yes or no)
SEPDIR=yes

# Which day do you want weekly backups? (1 to 7 where 1 is Monday)
DOWEEKLY=6

# Choose Compression type. (gzip or bzip2)
COMP=bzip2

# Command to run before backups (uncomment to use)
#PREBACKUP="/etc/pgsql-backup-pre"

# Command run after backups (uncomment to use)
#POSTBACKUP="bash /home/backups/scripts/ftp_pgsql"

#=====================================================================
# Options documentation
#=====================================================================
# Set USERNAME and PASSWORD of a user that has at least SELECT permission
# to ALL databases.
#
# Set the DBHOST option to the server you wish to backup, leave the
# default to backup "this server".(to backup multiple servers make
# copies of this file and set the options for that server)
#
# Put in the list of DBNAMES(Databases)to be backed up. If you would like
# to backup ALL DBs on the server set DBNAMES="all".(if set to "all" then
# any new DBs will automatically be backed up without needing to modify
# this backup script when a new DB is created).
#
# If the DB you want to backup has a space in the name replace the space
# with a % e.g. "data base" will become "data%base"
# NOTE: Spaces in DB names may not work correctly when SEPDIR=no.
#
# You can change the backup storage location from /backups to anything
# you like by using the BACKUPDIR setting..
#
# The MAILCONTENT and MAILADDR options and pretty self explanitory, use
# these to have the backup log mailed to you at any email address or multiple
# email addresses in a space seperated list.
# (If you set mail content to "log" you will require access to the "mail" program
# on your server. If you set this to "files" you will have to have mutt installed
# on your server. If you set it sto stdout it will log to the screen if run from
# the console or to the cron job owner if run through cron)
#
# MAXATTSIZE sets the largest allowed email attachments total (all backup files) you
# want the script to send. This is the size before it is encoded to be sent as an email
# so if your mail server will allow a maximum mail size of 5MB I would suggest setting
# MAXATTSIZE to be 25% smaller than that so a setting of 4000 would probably be fine.
#
# Finally copy automysqlbackup.sh to anywhere on your server and make sure
# to set executable permission. You can also copy the script to
# /etc/cron.daily to have it execute automatically every night or simply
# place a symlink in /etc/cron.daily to the file if you wish to keep it
# somwhere else.
# NOTE:On Debian copy the file with no extention for it to be run
# by cron e.g just name the file "automysqlbackup"
#
# Thats it..
#
#
# === Advanced options doc's ===
#
# The list of MDBNAMES is the DB's to be backed up only monthly. You should
# always include "mysql" in this list to backup your user/password
# information along with any other DBs that you only feel need to
# be backed up monthly. (if using a hosted server then you should
# probably remove "mysql" as your provider will be backing this up)
# NOTE: If DBNAMES="all" then MDBNAMES has no effect as all DBs will be backed
# up anyway.
#
# If you set DBNAMES="all" you can configure the option DBEXCLUDE. Other
# wise this option will not be used.
# This option can be used if you want to backup all dbs, but you want
# exclude some of them. (eg. a db is to big).
#
# Set CREATE_DATABASE to "yes" (the default) if you want your SQL-Dump to create
# a database with the same name as the original database when restoring.
# Saying "no" here will allow your to specify the database name you want to
# restore your dump into, making a copy of the database by using the dump
# created with automysqlbackup.
# NOTE: Not used if SEPDIR=no
#
# The SEPDIR option allows you to choose to have all DBs backed up to
# a single file (fast restore of entire server in case of crash) or to
# seperate directories for each DB (each DB can be restored seperately
# in case of single DB corruption or loss).
#
# To set the day of the week that you would like the weekly backup to happen
# set the DOWEEKLY setting, this can be a value from 1 to 7 where 1 is Monday,
# The default is 6 which means that weekly backups are done on a Saturday.
#
# COMP is used to choose the copmression used, options are gzip or bzip2.
# bzip2 will produce slightly smaller files but is more processor intensive so
# may take longer to complete.
#
# Use PREBACKUP and POSTBACKUP to specify Per and Post backup commands
# or scripts to perform tasks either before or after the backup process.
#
#
#=====================================================================
# Backup Rotation..
#=====================================================================
#
# Daily Backups are rotated weekly..
# Weekly Backups are run by default on Saturday Morning when
# cron.daily scripts are run...Can be changed with DOWEEKLY setting..
# Weekly Backups are rotated on a 5 week cycle..
# Monthly Backups are run on the 1st of the month..
# Monthly Backups are NOT rotated automatically...
# It may be a good idea to copy Monthly backups offline or to another
# server..
#
#=====================================================================
# Please Note!!
#=====================================================================
#
# I take no resposibility for any data loss or corruption when using
# this script..
# This script will not help in the event of a hard drive crash. If a
# copy of the backup has not be stored offline or on another PC..
# You should copy your backups offline regularly for best protection.
#
# Happy backing up...
#
#=====================================================================
# Change Log
#=====================================================================
#
# VER 1.0 - (2005-03-25)
#   Initial Release - based on AutoMySQLBackup 2.2
#
#=====================================================================
#=====================================================================
#
# Should not need to be modified from here down!!
#
#=====================================================================
#=====================================================================
PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/postgres/bin:/usr/local/pgsql/bin
DATE=`date +%Y-%m-%d`				# Datestamp e.g 2002-09-21
DOW=`date +%A`					# Day of the week e.g. Monday
DNOW=`date +%u`					# Day number of the week 1 to 7 where 1 represents Monday
DOM=`date +%d`					# Date of the Month e.g. 27
M=`date +%B`					# Month e.g January
W=`date +%V`					# Week Number e.g 37
VER=1.0						# Version Number
LOGFILE=$BACKUPDIR/$DBHOST-`date +%N`.log	# Logfile Name
OPT=""						# OPT string for use with mysqldump ( see man mysqldump )
BACKUPFILES=""					# thh: added for later mailing

# Create required directories
if [ ! -e "$BACKUPDIR" ]		# Check Backup Directory exists.
	then
	mkdir -p "$BACKUPDIR"
fi

if [ ! -e "$BACKUPDIR/daily" ]		# Check Daily Directory exists.
	then
	mkdir -p "$BACKUPDIR/daily"
fi

if [ ! -e "$BACKUPDIR/weekly" ]		# Check Weekly Directory exists.
	then
	mkdir -p "$BACKUPDIR/weekly"
fi

if [ ! -e "$BACKUPDIR/monthly" ]	# Check Monthly Directory exists.
	then
	mkdir -p "$BACKUPDIR/monthly"
fi


# IO redirection for logging.
touch $LOGFILE
exec 6>&1           # Link file descriptor #6 with stdout.
                    # Saves stdout.
exec > $LOGFILE     # stdout replaced with file $LOGFILE.


# Functions

# Database dump function
dbdump () {
pg_dump --username=$USERNAME $HOST $OPT $1 > $2
return 0
}

# Compression function
SUFFIX=""
compression () {
if [ "$COMP" = "gzip" ]; then
	gzip -f "$1"
	echo
	echo Backup Information for "$1"
	gzip -l "$1.gz"
	SUFFIX=".gz"
elif [ "$COMP" = "bzip2" ]; then
	echo Compression information for "$1.bz2"
	bzip2 -f -v $1 2>&1
	SUFFIX=".bz2"
else
	echo "No compression option set, check advanced settings"
fi
return 0
}


# Run command before we begin
if [ "$PREBACKUP" ]
	then
	echo ======================================================================
	echo "Prebackup command output."
	echo
	eval $PREBACKUP
	echo
	echo ======================================================================
	echo
fi


if [ "$SEPDIR" = "yes" ]; then # Check if CREATE DATABSE should be included in Dump
	if [ "$CREATE_DATABASE" = "no" ]; then
		OPT="$OPT"
	else
		OPT="$OPT --create"
	fi
else
	OPT="$OPT"
fi

# Hostname for LOG information
if [ "$DBHOST" = "localhost" ]; then
	DBHOST="`hostname -f`"
	HOST=""
else
	HOST="-h $DBHOST"
fi

# If backing up all DBs on the server
if [ "$DBNAMES" = "all" ]; then
	DBNAMES="`psql -U $USERNAME $HOST -l -A -F: | sed -ne "/:/ { /Name:Owner/d; /template0/d; s/:.*$//; p }"`"

	# If DBs are excluded
	for exclude in $DBEXCLUDE
	do
		DBNAMES=`echo $DBNAMES | sed "s/\b$exclude\b//g"`
	done

        MDBNAMES=$DBNAMES
fi

echo ======================================================================
echo AutoPostgreSQLBackup VER $VER
echo http://autopgsqlbackup.frozenpc.net/
echo
echo Backup of Database Server - $DBHOST
echo ======================================================================

# Test is seperate DB backups are required
if [ "$SEPDIR" = "yes" ]; then
echo Backup Start Time `date`
echo ======================================================================
	# Monthly Full Backup of all Databases
	if [ $DOM = "01" ]; then
		for MDB in $MDBNAMES
		do

			 # Prepare $DB for using
		        MDB="`echo $MDB | sed 's/%/ /g'`"

			if [ ! -e "$BACKUPDIR/monthly/$MDB" ]		# Check Monthly DB Directory exists.
			then
				mkdir -p "$BACKUPDIR/monthly/$MDB"
			fi
			echo Monthly Backup of $MDB...
				dbdump "$MDB" "$BACKUPDIR/monthly/$MDB/${MDB}_$DATE.$M.$MDB.sql"
				compression "$BACKUPDIR/monthly/$MDB/${MDB}_$DATE.$M.$MDB.sql"
				BACKUPFILES="$BACKUPFILES $BACKUPDIR/monthly/$MDB/${MDB}_$DATE.$M.$MDB.sql$SUFFIX"
			echo ----------------------------------------------------------------------
		done
	fi

	for DB in $DBNAMES
	do
	# Prepare $DB for using
	DB="`echo $DB | sed 's/%/ /g'`"

	# Create Separate directory for each DB
	if [ ! -e "$BACKUPDIR/daily/$DB" ]		# Check Daily DB Directory exists.
		then
		mkdir -p "$BACKUPDIR/daily/$DB"
	fi

	if [ ! -e "$BACKUPDIR/weekly/$DB" ]		# Check Weekly DB Directory exists.
		then
		mkdir -p "$BACKUPDIR/weekly/$DB"
	fi

	# Weekly Backup
	if [ $DNOW = $DOWEEKLY ]; then
		echo Weekly Backup of Database \( $DB \)
		echo Rotating 5 weeks Backups...
			if [ "$W" -le 05 ];then
				REMW=`expr 48 + $W`
			elif [ "$W" -lt 15 ];then
				REMW=0`expr $W - 5`
			else
				REMW=`expr $W - 5`
			fi
		eval rm -fv "$BACKUPDIR/weekly/$DB/week.$REMW.*"
		echo
			dbdump "$DB" "$BACKUPDIR/weekly/$DB/${DB}_week.$W.$DATE.sql"
			compression "$BACKUPDIR/weekly/$DB/${DB}_week.$W.$DATE.sql"
			BACKUPFILES="$BACKUPFILES $BACKUPDIR/weekly/$DB/${DB}_week.$W.$DATE.sql$SUFFIX"
		echo ----------------------------------------------------------------------

	# Daily Backup
	else
		echo Daily Backup of Database \( $DB \)
		echo Rotating last weeks Backup...
		eval rm -fv "$BACKUPDIR/daily/$DB/*.$DOW.sql.*"
		echo
			dbdump "$DB" "$BACKUPDIR/daily/$DB/${DB}_$DATE.$DOW.sql"
			compression "$BACKUPDIR/daily/$DB/${DB}_$DATE.$DOW.sql"
			BACKUPFILES="$BACKUPFILES $BACKUPDIR/daily/$DB/${DB}_$DATE.$DOW.sql$SUFFIX"
		echo ----------------------------------------------------------------------
	fi
	done
echo Backup End `date`
echo ======================================================================


else # One backup file for all DBs
echo Backup Start `date`
echo ======================================================================
	# Monthly Full Backup of all Databases
	if [ $DOM = "01" ]; then
		echo Monthly full Backup of \( $MDBNAMES \)...
			dbdump "$MDBNAMES" "$BACKUPDIR/monthly/$DATE.$M.all-databases.sql"
			compression "$BACKUPDIR/monthly/$DATE.$M.all-databases.sql"
			BACKUPFILES="$BACKUPFILES $BACKUPDIR/monthly/$DATE.$M.all-databases.sql$SUFFIX"
		echo ----------------------------------------------------------------------
	fi

	# Weekly Backup
	if [ $DNOW = $DOWEEKLY ]; then
		echo Weekly Backup of Databases \( $DBNAMES \)
		echo
		echo Rotating 5 weeks Backups...
			if [ "$W" -le 05 ];then
				REMW=`expr 48 + $W`
			elif [ "$W" -lt 15 ];then
				REMW=0`expr $W - 5`
			else
				REMW=`expr $W - 5`
			fi
		eval rm -fv "$BACKUPDIR/weekly/week.$REMW.*"
		echo
			dbdump "$DBNAMES" "$BACKUPDIR/weekly/week.$W.$DATE.sql"
			compression "$BACKUPDIR/weekly/week.$W.$DATE.sql"
			BACKUPFILES="$BACKUPFILES $BACKUPDIR/weekly/week.$W.$DATE.sql$SUFFIX"
		echo ----------------------------------------------------------------------

	# Daily Backup
	else
		echo Daily Backup of Databases \( $DBNAMES \)
		echo
		echo Rotating last weeks Backup...
		eval rm -fv "$BACKUPDIR/daily/*.$DOW.sql.*"
		echo
			dbdump "$DBNAMES" "$BACKUPDIR/daily/$DATE.$DOW.sql"
			compression "$BACKUPDIR/daily/$DATE.$DOW.sql"
			BACKUPFILES="$BACKUPFILES $BACKUPDIR/daily/$DATE.$DOW.sql$SUFFIX"
		echo ----------------------------------------------------------------------
	fi
echo Backup End Time `date`
echo ======================================================================
fi
echo Total disk space used for backup storage..
echo Size - Location
echo `du -hs "$BACKUPDIR"`
echo


# Run command when we're done
if [ "$POSTBACKUP" ]
	then
	echo ======================================================================
	echo "Postbackup command output."
	echo
	eval $POSTBACKUP
	echo
	echo ======================================================================
fi

#Clean up IO redirection
exec 1>&6 6>&-      # Restore stdout and close file descriptor #6.

if [ "$MAILCONTENT" = "files" ]
then
	#Get backup size
	ATTSIZE=`du -c $BACKUPFILES | grep "[[:digit:][:space:]]total$" |sed s/\s*total//`
	if [ $MAXATTSIZE -ge $ATTSIZE ]
	then
		BACKUPFILES=`echo "$BACKUPFILES" | sed -e "s# # -a #g"`	#enable multiple attachments
		mutt -s "PostgreSQL Backup Log and SQL Files for $DBHOST - $DATE" $BACKUPFILES $MAILADDR < $LOGFILE		#send via mutt
	else
		cat "$LOGFILE" | mail -s "WARNING! - PostgreSQL Backup exceeds set maximum attachment size on $HOST - $DATE" $MAILADDR
	fi
elif [ "$MAILCONTENT" = "log" ]
then
	cat "$LOGFILE" | mail -s "PostgreSQL Backup Log for $DBHOST - $DATE" $MAILADDR
else
	cat "$LOGFILE"
fi

# Clean up Logfile
eval rm -f "$LOGFILE"

exit 0
	#!/bin/bash
	#
	# PostgreSQL Backup Script Ver 1.0
	# http://autopgsqlbackup.frozenpc.net
	# Copyright (c) 2005 Aaron Axelsen <axelseaa@amadmax.com>
	#
	# This script is based of the AutoMySQLBackup Script Ver 2.2
	# It can be found at http://sourceforge.net/projects/automysqlbackup/
	#
	# The PostgreSQL changes are based on a patch agaisnt AutoMySQLBackup 1.9
	# created by Friedrich Lobenstock <fl@fl.priv.at>
	#
	# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	#
	#=====================================================================
	# Set the following variables to your system needs
	# (Detailed instructions below variables)
	#=====================================================================

	# Username to access the PostgreSQL server e.g. dbuser
	USERNAME=postgres

	# Password
	# create a file $HOME/.pgpass containing a line like this
	# hostname:::dbuser:dbpass
	# replace hostname with the value of DBHOST and postgres with
	# the value of USERNAME

	# Host name (or IP address) of PostgreSQL server e.g localhost
	DBHOST=localhost

	# List of DBNAMES for Daily/Weekly Backup e.g. "DB1 DB2 DB3"
	DBNAMES="all"

	# Backup directory location e.g /backups
	BACKUPDIR="/var/backups/postgres"

	# Mail setup
	# What would you like to be mailed to you?
	# - log : send only log file
	# - files : send log file and sql files as attachments (see docs)
	# - stdout : will simply output the log to the screen if run manually.
	MAILCONTENT="log"

	# Set the maximum allowed email size in k. (4000 = approx 5MB email [see docs])
	MAXATTSIZE="4000"

	# Email Address to send mail to? (user@domain.com)
	MAILADDR="root@localhost"


	# ============================================================
	# === ADVANCED OPTIONS ( Read the doc's below for details )===
	#=============================================================

	# List of DBBNAMES for Monthly Backups.
	MDBNAMES="template1 $DBNAMES"

	# List of DBNAMES to EXLUCDE if DBNAMES are set to all (must be in " quotes)
	DBEXCLUDE=""

	# Include CREATE DATABASE in backup?
	CREATE_DATABASE=yes

	# Separate backup directory and file for each DB? (yes or no)
	SEPDIR=yes

	# Which day do you want weekly backups? (1 to 7 where 1 is Monday)
	DOWEEKLY=6

	# Choose Compression type. (gzip or bzip2)
	COMP=bzip2

	# Command to run before backups (uncomment to use)
	#PREBACKUP="/etc/pgsql-backup-pre"

	# Command run after backups (uncomment to use)
	#POSTBACKUP="bash /home/backups/scripts/ftp_pgsql"

	#=====================================================================
	# Options documentation
	#=====================================================================
	# Set USERNAME and PASSWORD of a user that has at least SELECT permission
	# to ALL databases.
	#
	# Set the DBHOST option to the server you wish to backup, leave the
	# default to backup "this server".(to backup multiple servers make
	# copies of this file and set the options for that server)
	#
	# Put in the list of DBNAMES(Databases)to be backed up. If you would like
	# to backup ALL DBs on the server set DBNAMES="all".(if set to "all" then
	# any new DBs will automatically be backed up without needing to modify
	# this backup script when a new DB is created).
	#
	# If the DB you want to backup has a space in the name replace the space
	# with a % e.g. "data base" will become "data%base"
	# NOTE: Spaces in DB names may not work correctly when SEPDIR=no.
	#
	# You can change the backup storage location from /backups to anything
	# you like by using the BACKUPDIR setting..
	#
	# The MAILCONTENT and MAILADDR options and pretty self explanitory, use
	# these to have the backup log mailed to you at any email address or multiple
	# email addresses in a space seperated list.
	# (If you set mail content to "log" you will require access to the "mail" program
	# on your server. If you set this to "files" you will have to have mutt installed
	# on your server. If you set it sto stdout it will log to the screen if run from
	# the console or to the cron job owner if run through cron)
	#
	# MAXATTSIZE sets the largest allowed email attachments total (all backup files) you
	# want the script to send. This is the size before it is encoded to be sent as an email
	# so if your mail server will allow a maximum mail size of 5MB I would suggest setting
	# MAXATTSIZE to be 25% smaller than that so a setting of 4000 would probably be fine.
	#
	# Finally copy automysqlbackup.sh to anywhere on your server and make sure
	# to set executable permission. You can also copy the script to
	# /etc/cron.daily to have it execute automatically every night or simply
	# place a symlink in /etc/cron.daily to the file if you wish to keep it
	# somwhere else.
	# NOTE:On Debian copy the file with no extention for it to be run
	# by cron e.g just name the file "automysqlbackup"
	#
	# Thats it..
	#
	#
	# === Advanced options doc's ===
	#
	# The list of MDBNAMES is the DB's to be backed up only monthly. You should
	# always include "mysql" in this list to backup your user/password
	# information along with any other DBs that you only feel need to
	# be backed up monthly. (if using a hosted server then you should
	# probably remove "mysql" as your provider will be backing this up)
	# NOTE: If DBNAMES="all" then MDBNAMES has no effect as all DBs will be backed
	# up anyway.
	#
	# If you set DBNAMES="all" you can configure the option DBEXCLUDE. Other
	# wise this option will not be used.
	# This option can be used if you want to backup all dbs, but you want
	# exclude some of them. (eg. a db is to big).
	#
	# Set CREATE_DATABASE to "yes" (the default) if you want your SQL-Dump to create
	# a database with the same name as the original database when restoring.
	# Saying "no" here will allow your to specify the database name you want to
	# restore your dump into, making a copy of the database by using the dump
	# created with automysqlbackup.
	# NOTE: Not used if SEPDIR=no
	#
	# The SEPDIR option allows you to choose to have all DBs backed up to
	# a single file (fast restore of entire server in case of crash) or to
	# seperate directories for each DB (each DB can be restored seperately
	# in case of single DB corruption or loss).
	#
	# To set the day of the week that you would like the weekly backup to happen
	# set the DOWEEKLY setting, this can be a value from 1 to 7 where 1 is Monday,
	# The default is 6 which means that weekly backups are done on a Saturday.
	#
	# COMP is used to choose the copmression used, options are gzip or bzip2.
	# bzip2 will produce slightly smaller files but is more processor intensive so
	# may take longer to complete.
	#
	# Use PREBACKUP and POSTBACKUP to specify Per and Post backup commands
	# or scripts to perform tasks either before or after the backup process.
	#
	#
	#=====================================================================
	# Backup Rotation..
	#=====================================================================
	#
	# Daily Backups are rotated weekly..
	# Weekly Backups are run by default on Saturday Morning when
	# cron.daily scripts are run...Can be changed with DOWEEKLY setting..
	# Weekly Backups are rotated on a 5 week cycle..
	# Monthly Backups are run on the 1st of the month..
	# Monthly Backups are NOT rotated automatically...
	# It may be a good idea to copy Monthly backups offline or to another
	# server..
	#
	#=====================================================================
	# Please Note!!
	#=====================================================================
	#
	# I take no resposibility for any data loss or corruption when using
	# this script..
	# This script will not help in the event of a hard drive crash. If a
	# copy of the backup has not be stored offline or on another PC..
	# You should copy your backups offline regularly for best protection.
	#
	# Happy backing up...
	#
	#=====================================================================
	# Change Log
	#=====================================================================
	#
	# VER 1.0 - (2005-03-25)
	# Initial Release - based on AutoMySQLBackup 2.2
	#
	#=====================================================================
	#=====================================================================
	#
	# Should not need to be modified from here down!!
	#
	#=====================================================================
	#=====================================================================
	PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/postgres/bin:/usr/local/pgsql/bin
	DATE=`date +%Y-%m-%d` # Datestamp e.g 2002-09-21
	DOW=`date +%A` # Day of the week e.g. Monday
	DNOW=`date +%u` # Day number of the week 1 to 7 where 1 represents Monday
	DOM=`date +%d` # Date of the Month e.g. 27
	M=`date +%B` # Month e.g January
	W=`date +%V` # Week Number e.g 37
	VER=1.0 # Version Number
	LOGFILE=$BACKUPDIR/$DBHOST-`date +%N`.log # Logfile Name
	OPT="" # OPT string for use with mysqldump ( see man mysqldump )
	BACKUPFILES="" # thh: added for later mailing

	# Create required directories
	if [ ! -e "$BACKUPDIR" ] # Check Backup Directory exists.
	then
	mkdir -p "$BACKUPDIR"
	fi

	if [ ! -e "$BACKUPDIR/daily" ] # Check Daily Directory exists.
	then
	mkdir -p "$BACKUPDIR/daily"
	fi

	if [ ! -e "$BACKUPDIR/weekly" ] # Check Weekly Directory exists.
	then
	mkdir -p "$BACKUPDIR/weekly"
	fi

	if [ ! -e "$BACKUPDIR/monthly" ] # Check Monthly Directory exists.
	then
	mkdir -p "$BACKUPDIR/monthly"
	fi


	# IO redirection for logging.
	touch $LOGFILE
	exec 6>&1 # Link file descriptor #6 with stdout.
	# Saves stdout.
	exec > $LOGFILE # stdout replaced with file $LOGFILE.


	# Functions

	# Database dump function
	dbdump () {
	pg_dump --username=$USERNAME $HOST $OPT $1 > $2
	return 0
	}

	# Compression function
	SUFFIX=""
	compression () {
	if [ "$COMP" = "gzip" ]; then
	gzip -f "$1"
	echo
	echo Backup Information for "$1"
	gzip -l "$1.gz"
	SUFFIX=".gz"
	elif [ "$COMP" = "bzip2" ]; then
	echo Compression information for "$1.bz2"
	bzip2 -f -v $1 2>&1
	SUFFIX=".bz2"
	else
	echo "No compression option set, check advanced settings"
	fi
	return 0
	}


	# Run command before we begin
	if [ "$PREBACKUP" ]
	then
	echo ======================================================================
	echo "Prebackup command output."
	echo
	eval $PREBACKUP
	echo
	echo ======================================================================
	echo
	fi


	if [ "$SEPDIR" = "yes" ]; then # Check if CREATE DATABSE should be included in Dump
	if [ "$CREATE_DATABASE" = "no" ]; then
	OPT="$OPT"
	else
	OPT="$OPT --create"
	fi
	else
	OPT="$OPT"
	fi

	# Hostname for LOG information
	if [ "$DBHOST" = "localhost" ]; then
	DBHOST="`hostname -f`"
	HOST=""
	else
	HOST="-h $DBHOST"
	fi

	# If backing up all DBs on the server
	if [ "$DBNAMES" = "all" ]; then
	DBNAMES="`psql -U $USERNAME $HOST -l -A -F: \| sed -ne "/:/ { /Name:Owner/d; /template0/d; s/:.*$//; p }"`"

	# If DBs are excluded
	for exclude in $DBEXCLUDE
	do
	DBNAMES=`echo $DBNAMES \| sed "s/\b$exclude\b//g"`
	done

	MDBNAMES=$DBNAMES
	fi

	echo ======================================================================
	echo AutoPostgreSQLBackup VER $VER
	echo http://autopgsqlbackup.frozenpc.net/
	echo
	echo Backup of Database Server - $DBHOST
	echo ======================================================================

	# Test is seperate DB backups are required
	if [ "$SEPDIR" = "yes" ]; then
	echo Backup Start Time `date`
	echo ======================================================================
	# Monthly Full Backup of all Databases
	if [ $DOM = "01" ]; then
	for MDB in $MDBNAMES
	do

	# Prepare $DB for using
	MDB="`echo $MDB \| sed 's/%/ /g'`"

	if [ ! -e "$BACKUPDIR/monthly/$MDB" ] # Check Monthly DB Directory exists.
	then
	mkdir -p "$BACKUPDIR/monthly/$MDB"
	fi
	echo Monthly Backup of $MDB...
	dbdump "$MDB" "$BACKUPDIR/monthly/$MDB/${MDB}_$DATE.$M.$MDB.sql"
	compression "$BACKUPDIR/monthly/$MDB/${MDB}_$DATE.$M.$MDB.sql"
	BACKUPFILES="$BACKUPFILES $BACKUPDIR/monthly/$MDB/${MDB}_$DATE.$M.$MDB.sql$SUFFIX"
	echo ----------------------------------------------------------------------
	done
	fi

	for DB in $DBNAMES
	do
	# Prepare $DB for using
	DB="`echo $DB \| sed 's/%/ /g'`"

	# Create Separate directory for each DB
	if [ ! -e "$BACKUPDIR/daily/$DB" ] # Check Daily DB Directory exists.
	then
	mkdir -p "$BACKUPDIR/daily/$DB"
	fi

	if [ ! -e "$BACKUPDIR/weekly/$DB" ] # Check Weekly DB Directory exists.
	then
	mkdir -p "$BACKUPDIR/weekly/$DB"
	fi

	# Weekly Backup
	if [ $DNOW = $DOWEEKLY ]; then
	echo Weekly Backup of Database \( $DB \)
	echo Rotating 5 weeks Backups...
	if [ "$W" -le 05 ];then
	REMW=`expr 48 + $W`
	elif [ "$W" -lt 15 ];then
	REMW=0`expr $W - 5`
	else
	REMW=`expr $W - 5`
	fi
	eval rm -fv "$BACKUPDIR/weekly/$DB/week.$REMW.*"
	echo
	dbdump "$DB" "$BACKUPDIR/weekly/$DB/${DB}_week.$W.$DATE.sql"
	compression "$BACKUPDIR/weekly/$DB/${DB}_week.$W.$DATE.sql"
	BACKUPFILES="$BACKUPFILES $BACKUPDIR/weekly/$DB/${DB}_week.$W.$DATE.sql$SUFFIX"
	echo ----------------------------------------------------------------------

	# Daily Backup
	else
	echo Daily Backup of Database \( $DB \)
	echo Rotating last weeks Backup...
	eval rm -fv "$BACKUPDIR/daily/$DB/.$DOW.sql."
	echo
	dbdump "$DB" "$BACKUPDIR/daily/$DB/${DB}_$DATE.$DOW.sql"
	compression "$BACKUPDIR/daily/$DB/${DB}_$DATE.$DOW.sql"
	BACKUPFILES="$BACKUPFILES $BACKUPDIR/daily/$DB/${DB}_$DATE.$DOW.sql$SUFFIX"
	echo ----------------------------------------------------------------------
	fi
	done
	echo Backup End `date`
	echo ======================================================================


	else # One backup file for all DBs
	echo Backup Start `date`
	echo ======================================================================
	# Monthly Full Backup of all Databases
	if [ $DOM = "01" ]; then
	echo Monthly full Backup of \( $MDBNAMES \)...
	dbdump "$MDBNAMES" "$BACKUPDIR/monthly/$DATE.$M.all-databases.sql"
	compression "$BACKUPDIR/monthly/$DATE.$M.all-databases.sql"
	BACKUPFILES="$BACKUPFILES $BACKUPDIR/monthly/$DATE.$M.all-databases.sql$SUFFIX"
	echo ----------------------------------------------------------------------
	fi

	# Weekly Backup
	if [ $DNOW = $DOWEEKLY ]; then
	echo Weekly Backup of Databases \( $DBNAMES \)
	echo
	echo Rotating 5 weeks Backups...
	if [ "$W" -le 05 ];then
	REMW=`expr 48 + $W`
	elif [ "$W" -lt 15 ];then
	REMW=0`expr $W - 5`
	else
	REMW=`expr $W - 5`
	fi
	eval rm -fv "$BACKUPDIR/weekly/week.$REMW.*"
	echo
	dbdump "$DBNAMES" "$BACKUPDIR/weekly/week.$W.$DATE.sql"
	compression "$BACKUPDIR/weekly/week.$W.$DATE.sql"
	BACKUPFILES="$BACKUPFILES $BACKUPDIR/weekly/week.$W.$DATE.sql$SUFFIX"
	echo ----------------------------------------------------------------------

	# Daily Backup
	else
	echo Daily Backup of Databases \( $DBNAMES \)
	echo
	echo Rotating last weeks Backup...
	eval rm -fv "$BACKUPDIR/daily/.$DOW.sql."
	echo
	dbdump "$DBNAMES" "$BACKUPDIR/daily/$DATE.$DOW.sql"
	compression "$BACKUPDIR/daily/$DATE.$DOW.sql"
	BACKUPFILES="$BACKUPFILES $BACKUPDIR/daily/$DATE.$DOW.sql$SUFFIX"
	echo ----------------------------------------------------------------------
	fi
	echo Backup End Time `date`
	echo ======================================================================
	fi
	echo Total disk space used for backup storage..
	echo Size - Location
	echo `du -hs "$BACKUPDIR"`
	echo


	# Run command when we're done
	if [ "$POSTBACKUP" ]
	then
	echo ======================================================================
	echo "Postbackup command output."
	echo
	eval $POSTBACKUP
	echo
	echo ======================================================================
	fi

	#Clean up IO redirection
	exec 1>&6 6>&- # Restore stdout and close file descriptor #6.

	if [ "$MAILCONTENT" = "files" ]
	then
	#Get backup size
	ATTSIZE=`du -c $BACKUPFILES \| grep "[[:digit:][:space:]]total$" \|sed s/\s*total//`
	if [ $MAXATTSIZE -ge $ATTSIZE ]
	then
	BACKUPFILES=`echo "$BACKUPFILES" \| sed -e "s# # -a #g"` #enable multiple attachments
	mutt -s "PostgreSQL Backup Log and SQL Files for $DBHOST - $DATE" $BACKUPFILES $MAILADDR < $LOGFILE #send via mutt
	else
	cat "$LOGFILE" \| mail -s "WARNING! - PostgreSQL Backup exceeds set maximum attachment size on $HOST - $DATE" $MAILADDR
	fi
	elif [ "$MAILCONTENT" = "log" ]
	then
	cat "$LOGFILE" \| mail -s "PostgreSQL Backup Log for $DBHOST - $DATE" $MAILADDR
	else
	cat "$LOGFILE"
	fi

	# Clean up Logfile
	eval rm -f "$LOGFILE"

	exit 0