warm database.

Hello,

I am planning to make setup for warm standby databae in postgres. But I
am facing problem when I try to apply WAL files using shell scripts
restore.sh.

After applying exiting WAL file in archive directory, it does not wait
for next WAL files and come out and write the message in database
logfile which show that

Archive recovery is completed.Now system is ready for use.

I check this restore.sh file and tried to debug which show syntax
error in below mentioned line.

Can anybody tell me why it is showing syntax error and why it is not
waiting for next WAL files

Restore.sh

#!/bin/bash

RESTORE_FROM=$1

RESTORE_TO=$2

DELAY=100000

TRIGGERED=0

TRIGGER_FILE="/home/backup/trigger"

copyfunc() {

if [ "$TRIGGERED" -eq "0" ]; then

cp -v -i $RESTORE_FROM $RESTORE_TO

fi

}

k=`expr $1 : '.*\(history\)'` ------------this is the line which show
syntax error

if [ "$k" == "history" ]; then

copyfunc;

exit $?;

fi

while [ ! -f "$RESTORE_FROM" -a "$TRIGGERED" -eq "0" ]; do

usleep $DELAY;

if [ -e $TRIGGER_FILE ]; then

TRIGGERED=1;

fi

done

copyfunc;

when I debug this script through command sh -x restore.sh

it show like that.

+ RESTORE_FROM=

+ RESTORE_TO=

+ DELAY=100000

+ TRIGGERED=0

+ TRIGGER_FILE=/home/backup/trigger

++ expr : '.*\(history\)'

expr: syntax error

+ k=

+ '[' '' == backup ']'

+ '[' '!' -f '' -a 0 -eq 0 ']'

+ usleep 100000

+ '[' -e /home/backup/trigger ']'

+ TRIGGERED=1

+ '[' '!' -f '' -a 1 -eq 0 ']'

+ copyfunc

+ '[' 1 -eq 0 ']'

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